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data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Structure" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Structure"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Structure</span> </div> </a> <button aria-controls="toc-Structure-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Structure subsection</span> </button> <ul id="toc-Structure-sublist" class="vector-toc-list"> <li id="toc-Layers" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Layers"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Layers</span> </div> </a> <ul id="toc-Layers-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Skin" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Skin"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Skin</span> </div> </a> <ul id="toc-Skin-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nerve_supply" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nerve_supply"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Nerve supply</span> </div> </a> <ul id="toc-Nerve_supply-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Blood_supply" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Blood_supply"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.4</span> <span>Blood supply</span> </div> </a> <ul id="toc-Blood_supply-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Eyelashes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Eyelashes"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.5</span> <span>Eyelashes</span> </div> </a> <ul id="toc-Eyelashes-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Function" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Function"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Function</span> </div> </a> <ul id="toc-Function-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Clinical_significance" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Clinical_significance"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Clinical significance</span> </div> </a> <button aria-controls="toc-Clinical_significance-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Clinical significance subsection</span> </button> <ul id="toc-Clinical_significance-sublist" class="vector-toc-list"> <li id="toc-Surgery" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Surgery"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Surgery</span> </div> </a> <ul id="toc-Surgery-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Anatomical_variation" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Anatomical_variation"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Anatomical variation</span> </div> </a> <button aria-controls="toc-Anatomical_variation-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Anatomical variation subsection</span> </button> <ul id="toc-Anatomical_variation-sublist" class="vector-toc-list"> <li id="toc-Prevalence" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Prevalence"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Prevalence</span> </div> </a> <ul id="toc-Prevalence-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Society_and_culture" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Society_and_culture"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Society and culture</span> </div> </a> <button aria-controls="toc-Society_and_culture-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Society and culture subsection</span> </button> <ul id="toc-Society_and_culture-sublist" class="vector-toc-list"> <li id="toc-Cosmetic_surgery" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Cosmetic_surgery"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Cosmetic surgery</span> </div> </a> <ul id="toc-Cosmetic_surgery-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Death" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Death"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.2</span> <span>Death</span> </div> </a> <ul id="toc-Death-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Additional_images" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Additional_images"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Additional images</span> </div> </a> <ul id="toc-Additional_images-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sources" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sources"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Sources</span> </div> </a> <ul id="toc-Sources-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Eyelid</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 71 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-71" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">71 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AC%D9%81%D9%86" title="جفن – Arabic" lang="ar" hreflang="ar" data-title="جفن" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Parpiello" title="Parpiello – Aragonese" lang="an" hreflang="an" data-title="Parpiello" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%AC%DC%A1%DC%AA%DC%90_%DC%95%DC%A5%DC%9D%DC%A2%DC%90" title="ܬܡܪܐ ܕܥܝܢܐ – Aramaic" lang="arc" hreflang="arc" data-title="ܬܡܪܐ ܕܥܝܢܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="Aramaic" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%DA%AF%D8%A4%D8%B2_%D9%82%D8%A7%D9%BE%D8%A7%D8%BA%DB%8C" title="گؤز قاپاغی – South Azerbaijani" lang="azb" hreflang="azb" data-title="گؤز قاپاغی" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A6%B2%E0%A6%95_(%E0%A6%9A%E0%A7%8B%E0%A6%96)" title="পলক (চোখ) – Bangla" lang="bn" hreflang="bn" data-title="পলক (চোখ)" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9F%D0%B0%D0%B2%D0%B5%D0%BA%D1%96" title="Павекі – Belarusian" lang="be" hreflang="be" data-title="Павекі" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%BB%D0%B5%D0%BF%D0%B0%D1%87" title="Клепач – Bulgarian" lang="bg" hreflang="bg" data-title="Клепач" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Malvenn" title="Malvenn – Breton" lang="br" hreflang="br" data-title="Malvenn" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Parpella" title="Parpella – Catalan" lang="ca" hreflang="ca" data-title="Parpella" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9A%D1%83%C3%A7_%D1%85%D1%83%D0%BF%D0%B0%D0%BD%D0%BA%D0%B8" title="Куç хупанки – Chuvash" lang="cv" hreflang="cv" data-title="Куç хупанки" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/O%C4%8Dn%C3%AD_v%C3%AD%C4%8Dko" title="Oční víčko – Czech" lang="cs" hreflang="cs" data-title="Oční víčko" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/%C3%98jenl%C3%A5g" title="Øjenlåg – Danish" lang="da" hreflang="da" data-title="Øjenlåg" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://de.wikipedia.org/wiki/Augenlid" title="Augenlid – German" lang="de" hreflang="de" data-title="Augenlid" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-dv mw-list-item"><a href="https://dv.wikipedia.org/wiki/%DE%8D%DE%AE%DE%8D%DE%AA%DE%8E%DE%AC_%DE%83%DE%A6%DE%88%DE%A6" title="ލޮލުގެ ރަވަ – Divehi" lang="dv" hreflang="dv" data-title="ލޮލުގެ ރަވަ" data-language-autonym="ދިވެހިބަސް" data-language-local-name="Divehi" class="interlanguage-link-target"><span>ދިވެހިބަސް</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Silmalaug" title="Silmalaug – Estonian" lang="et" hreflang="et" data-title="Silmalaug" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%92%CE%BB%CE%AD%CF%86%CE%B1%CF%81%CE%BF" title="Βλέφαρο – Greek" lang="el" hreflang="el" data-title="Βλέφαρο" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/P%C3%A1rpado" title="Párpado – Spanish" lang="es" hreflang="es" data-title="Párpado" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Palpebro" title="Palpebro – Esperanto" lang="eo" hreflang="eo" data-title="Palpebro" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Betazal" title="Betazal – Basque" lang="eu" hreflang="eu" data-title="Betazal" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D9%84%DA%A9" title="پلک – Persian" lang="fa" hreflang="fa" data-title="پلک" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Paupi%C3%A8re" title="Paupière – French" lang="fr" hreflang="fr" data-title="Paupière" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Eachlid" title="Eachlid – Western Frisian" lang="fy" hreflang="fy" data-title="Eachlid" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Caip%C3%ADn_s%C3%BAile" title="Caipín súile – Irish" lang="ga" hreflang="ga" data-title="Caipín súile" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/P%C3%A1lpebra" title="Pálpebra – Galician" lang="gl" hreflang="gl" data-title="Pálpebra" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%88%88%EA%BA%BC%ED%92%80" title="눈꺼풀 – Korean" lang="ko" hreflang="ko" data-title="눈꺼풀" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BF%D5%B8%D5%BA%D5%A5%D6%80" title="Կոպեր – Armenian" lang="hy" hreflang="hy" data-title="Կոպեր" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B2%E0%A4%95" title="पलक – Hindi" lang="hi" hreflang="hi" data-title="पलक" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Palpebro" title="Palpebro – Ido" lang="io" hreflang="io" data-title="Palpebro" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kelopak_mata" title="Kelopak mata – Indonesian" lang="id" hreflang="id" data-title="Kelopak mata" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Palpebra" title="Palpebra – Italian" lang="it" hreflang="it" data-title="Palpebra" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A2%D7%A4%D7%A2%D7%A3" title="עפעף – Hebrew" lang="he" hreflang="he" data-title="עפעף" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B0%E0%B3%86%E0%B2%AA%E0%B3%8D%E0%B2%AA%E0%B3%86" title="ರೆಪ್ಪೆ – Kannada" lang="kn" hreflang="kn" data-title="ರೆಪ್ಪೆ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D9%B9%D9%88%D8%B1" title="ٹور – Kashmiri" lang="ks" hreflang="ks" data-title="ٹور" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="Kashmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%9A%D0%B0%D0%B1%D0%B0%D2%9B_(%D0%B0%D0%BD%D0%B0%D1%82%D0%BE%D0%BC%D0%B8%D1%8F)" title="Қабақ (анатомия) – Kazakh" lang="kk" hreflang="kk" data-title="Қабақ (анатомия)" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Palpebra" title="Palpebra – Latin" lang="la" hreflang="la" data-title="Palpebra" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Vokas" title="Vokas – Lithuanian" lang="lt" hreflang="lt" data-title="Vokas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9E%D1%87%D0%B5%D0%BD_%D0%BA%D0%B0%D0%BF%D0%B0%D0%BA" title="Очен капак – Macedonian" lang="mk" hreflang="mk" data-title="Очен капак" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%95%E0%B5%BA%E0%B4%AA%E0%B5%8B%E0%B4%B3" title="കൺപോള – Malayalam" lang="ml" hreflang="ml" data-title="കൺപോള" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AA%E0%A4%BE%E0%A4%AA%E0%A4%A3%E0%A5%80" title="पापणी – Marathi" lang="mr" hreflang="mr" data-title="पापणी" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Kelopak_mata" title="Kelopak mata – Malay" lang="ms" hreflang="ms" data-title="Kelopak mata" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ooglid" title="Ooglid – Dutch" lang="nl" hreflang="nl" data-title="Ooglid" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B2%E0%A4%95" title="पलक – Nepali" lang="ne" hreflang="ne" data-title="पलक" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%81%BE%E3%81%B6%E3%81%9F" title="まぶた – Japanese" lang="ja" hreflang="ja" data-title="まぶた" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/%C3%98yelokk" title="Øyelokk – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Øyelokk" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AA%E0%A8%B2%E0%A8%95" title="ਪਲਕ – Punjabi" lang="pa" hreflang="pa" data-title="ਪਲਕ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pag mw-list-item"><a href="https://pag.wikipedia.org/wiki/Lukab-lukab" title="Lukab-lukab – Pangasinan" lang="pag" hreflang="pag" data-title="Lukab-lukab" data-language-autonym="Pangasinan" data-language-local-name="Pangasinan" class="interlanguage-link-target"><span>Pangasinan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Powieka" title="Powieka – Polish" lang="pl" hreflang="pl" data-title="Powieka" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/P%C3%A1lpebra" title="Pálpebra – Portuguese" lang="pt" hreflang="pt" data-title="Pálpebra" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Pleoape" title="Pleoape – Romanian" lang="ro" hreflang="ro" data-title="Pleoape" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%B5%D0%BA%D0%BE" title="Веко – Russian" lang="ru" hreflang="ru" data-title="Веко" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%AA%E0%A4%95%E0%A5%8D%E0%A4%B7%E0%A5%8D%E0%A4%AE" title="पक्ष्म – Sanskrit" lang="sa" hreflang="sa" data-title="पक्ष्म" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskrit" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Pinnularu_(piega_cut%C3%A0nia_m%C3%B2bbuli)" title="Pinnularu (piega cutània mòbbuli) – Sicilian" lang="scn" hreflang="scn" data-title="Pinnularu (piega cutània mòbbuli)" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%87%E0%B7%83%E0%B7%92%E0%B6%B4%E0%B7%92%E0%B6%BA" title="ඇසිපිය – Sinhala" lang="si" hreflang="si" data-title="ඇසිපිය" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Eyelid" title="Eyelid – Simple English" lang="en-simple" hreflang="en-simple" data-title="Eyelid" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Veka" title="Veka – Slovenian" lang="sl" hreflang="sl" data-title="Veka" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%BE%DB%8E%DA%B5%D9%88%D9%88" title="پێڵوو – Central Kurdish" lang="ckb" hreflang="ckb" data-title="پێڵوو" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9E%D1%87%D0%BD%D0%B8_%D0%BA%D0%B0%D0%BF%D0%B0%D0%BA" title="Очни капак – Serbian" lang="sr" hreflang="sr" data-title="Очни капак" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Silm%C3%A4luomi" title="Silmäluomi – Finnish" lang="fi" hreflang="fi" data-title="Silmäluomi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/%C3%96gonlock" title="Ögonlock – Swedish" lang="sv" hreflang="sv" data-title="Ögonlock" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9A%D2%AF%D0%B7_%D0%BA%D0%B0%D0%B1%D0%B0%D0%B3%D1%8B" title="Күз кабагы – Tatar" lang="tt" hreflang="tt" data-title="Күз кабагы" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/G%C3%B6z_kapa%C4%9F%C4%B1" title="Göz kapağı – Turkish" lang="tr" hreflang="tr" data-title="Göz kapağı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/A%CC%B1kunkwa-a%CC%B1li" title="A̱kunkwa-a̱li – Tyap" lang="kcg" hreflang="kcg" data-title="A̱kunkwa-a̱li" data-language-autonym="Tyap" data-language-local-name="Tyap" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BE%D0%B2%D1%96%D0%BA%D0%B0" title="Повіка – Ukrainian" lang="uk" hreflang="uk" data-title="Повіка" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/M%C3%AD_m%E1%BA%AFt" title="Mí mắt – Vietnamese" lang="vi" hreflang="vi" data-title="Mí mắt" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/P%C3%A5pire" title="Påpire – Walloon" lang="wa" hreflang="wa" data-title="Påpire" data-language-autonym="Walon" data-language-local-name="Walloon" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Lakuplakop" title="Lakuplakop – Waray" lang="war" hreflang="war" data-title="Lakuplakop" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%9C%BC%E7%9D%91" title="眼睑 – Wu" lang="wuu" hreflang="wuu" data-title="眼睑" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%90%D7%95%D7%99%D7%92%D7%9F-%D7%9C%D7%A2%D7%93%D7%9C" title="אויגן-לעדל – Yiddish" lang="yi" hreflang="yi" data-title="אויגן-לעדל" data-language-autonym="ייִדיש" data-language-local-name="Yiddish" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%9C%BC%E7%9A%AE" title="眼皮 – Cantonese" lang="yue" hreflang="yue" data-title="眼皮" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a 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class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Thin fold of skin that covers and protects the eye</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For the 2015 South Korean film, see <a href="/wiki/Eyelids_(film)" title="Eyelids (film)">Eyelids (film)</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Palpebral" redirects here. Not to be confused with <a href="/wiki/Palpation" title="Palpation">Palpable</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Palpebrae" redirects here. For the levator palpebrae, see <a href="/wiki/Levator_palpebrae_superioris_muscle" title="Levator palpebrae superioris muscle">Levator palpebrae superioris muscle</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background-color:dimgray; color: white">Eyelid</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Closed_human_eye,_superior_view.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Closed_human_eye%2C_superior_view.jpg/250px-Closed_human_eye%2C_superior_view.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Closed_human_eye%2C_superior_view.jpg/375px-Closed_human_eye%2C_superior_view.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Closed_human_eye%2C_superior_view.jpg/500px-Closed_human_eye%2C_superior_view.jpg 2x" data-file-width="2060" data-file-height="1545" /></a></span><div class="infobox-caption">Closed <a href="/wiki/Human_eye" title="Human eye">human eye</a> showing eyelid and a set of <a href="/wiki/Eyelash" title="Eyelash">lashes</a> which grow along the edge of the lid</div></td></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Human_eye_with_eyelid_pulled_open,_anterior_view.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg/250px-Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg/375px-Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/10/Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg/500px-Human_eye_with_eyelid_pulled_open%2C_anterior_view.jpg 2x" data-file-width="2136" data-file-height="1602" /></a></span><div class="infobox-caption">The same eye with its eyelid pulled open, displaying <a href="/wiki/Meibomian_gland" title="Meibomian gland">meibomian glands</a> on the inside and a set of <a href="/wiki/Eyelash" title="Eyelash">lashes</a> growing in multiple layers</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Details</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Organ_system" title="Organ system">System</a></th><td class="infobox-data">Integumentary</td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em">Function</th><td class="infobox-data">Covers and protects the eye by blinking or closing, keeping the cornea moist</td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Identifiers</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Latin" title="Latin">Latin</a></th><td class="infobox-data"><i>palpebrae</i></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Medical_Subject_Headings" title="Medical Subject Headings">MeSH</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?ui=D005143">D005143</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA98</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ifaa.unifr.ch/Public/EntryPage/TA98%20Tree/Entity%20TA98%20EN/15.2.07.024%20Entity%20TA98%20EN.htm">A15.2.07.024</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA2</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ta2viewer.openanatomy.org/?id=114">114</a>, <a rel="nofollow" class="external text" href="https://ta2viewer.openanatomy.org/?id=115">115</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Foundational_Model_of_Anatomy" title="Foundational Model of Anatomy">FMA</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://bioportal.bioontology.org/ontologies/FMA/?p=classes&conceptid=http%3A%2F%2Fpurl.org%2Fsig%2Font%2Ffma%2Ffma54437">54437</a></td></tr><tr><td colspan="2" class="infobox-below"><a href="/wiki/Anatomical_terminology" title="Anatomical terminology">Anatomical terminology</a><div style="text-align: right;"><small class="noprint">[<a href="https://www.wikidata.org/wiki/Q48228" class="extiw" title="d:Q48228">edit on Wikidata</a>]</small></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Gray515.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/Gray515.png/220px-Gray515.png" decoding="async" width="220" height="215" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/Gray515.png/330px-Gray515.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/35/Gray515.png/440px-Gray515.png 2x" data-file-width="550" data-file-height="538" /></a><figcaption>Blood vessels of the eyelids, front view</figcaption></figure> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-{{{name=Unbalanced_human-centric}}} plainlinks metadata ambox ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span class="skin-invert" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Man_walking_icon_1410105361.svg/24px-Man_walking_icon_1410105361.svg.png" decoding="async" width="24" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Man_walking_icon_1410105361.svg/35px-Man_walking_icon_1410105361.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/30/Man_walking_icon_1410105361.svg/47px-Man_walking_icon_1410105361.svg.png 2x" data-file-width="512" data-file-height="861" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article about <a href="/wiki/Biology" title="Biology">biology</a> may be <b>excessively human-centric</b>.<span class="hide-when-compact"> Please <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Eyelid&action=edit">improve coverage for other species</a> and discuss this issue on the <a href="/wiki/Talk:Eyelid" title="Talk:Eyelid">talk page</a>.</span> <span class="date-container"><i>(<span class="date">June 2019</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>An <b>eyelid</b> (<span class="rt-commentedText nowrap"><span class="IPA nopopups noexcerpt" lang="en-fonipa"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/<span style="border-bottom:1px dotted"><span title="/ˈ/: primary stress follows">ˈ</span><span title="/aɪ/: 'i' in 'tide'">aɪ</span><span title="/./: syllable break">.</span><span title="'l' in 'lie'">l</span><span title="/ɪ/: 'i' in 'kit'">ɪ</span><span title="'d' in 'dye'">d</span></span>/</a></span></span> <a href="/wiki/Help:Pronunciation_respelling_key" title="Help:Pronunciation respelling key"><i title="English pronunciation respelling"><span style="font-size:90%">EYE</span>-lid</i></a>) is a thin fold of skin that covers and protects an <a href="/wiki/Eye" title="Eye">eye</a>. The <a href="/wiki/Levator_palpebrae_superioris_muscle" title="Levator palpebrae superioris muscle">levator palpebrae superioris muscle</a> retracts the eyelid, exposing the cornea to the outside, giving vision. This can be either voluntarily or involuntarily. "Palpebral" (and "blepharal") means relating to the eyelids. Its key function is to regularly spread the <a href="/wiki/Tears" title="Tears">tears</a> and other secretions on the eye surface to keep it moist, since the cornea must be continuously moist. They keep the eyes from drying out when asleep. Moreover, the <a href="/wiki/Blink" class="mw-redirect" title="Blink">blink</a> reflex protects the eye from foreign bodies. A set of specialized hairs known as <a href="/wiki/Eyelash" title="Eyelash">lashes</a> grow from the upper and lower eyelid margins to further protect the eye from dust and debris. </p><p>The appearance of the human upper eyelid often varies between different populations. The prevalence of an <a href="/wiki/Epicanthic_fold" title="Epicanthic fold">epicanthic fold</a> covering the inner corner of the eye account for the majority of <a href="/wiki/East_Asian" class="mw-redirect" title="East Asian">East Asian</a> and <a href="/wiki/Southeast_Asian" class="mw-redirect" title="Southeast Asian">Southeast Asian</a> populations, and is also found in varying degrees among other populations. Separately, but also similarly varying between populations, the crease of the remainder of the eyelid may form either a "single eyelid", a "double eyelid", or an intermediate form. </p><p>Eyelids can be found in other animals, some of which may have a third eyelid, or <a href="/wiki/Nictitating_membrane" title="Nictitating membrane">nictitating membrane</a>. A <a href="/wiki/Human_vestigiality" title="Human vestigiality">vestige of this in humans</a> survives as the <a href="/wiki/Plica_semilunaris_of_conjunctiva" title="Plica semilunaris of conjunctiva">plica semilunaris</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=1" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Layers">Layers</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=2" title="Edit section: Layers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The eyelid is made up of several layers; from superficial to deep, these are: <a href="/wiki/Skin" title="Skin">skin</a>, <a href="/wiki/Subcutis" class="mw-redirect" title="Subcutis">subcutaneous tissue</a>, <a href="/wiki/Orbicularis_oculi_muscle" title="Orbicularis oculi muscle">orbicularis oculi</a>, <a href="/wiki/Orbital_septum" title="Orbital septum">orbital septum</a> and <a href="/wiki/Tarsus_(eyelids)" title="Tarsus (eyelids)">tarsal plates</a>, and palpebral <a href="/wiki/Conjunctiva" title="Conjunctiva">conjunctiva</a>. The <a href="/wiki/Meibomian_glands" class="mw-redirect" title="Meibomian glands">meibomian glands</a> lie within the eyelid and secrete the lipid part of the <a href="/wiki/Tears" title="Tears">tear film</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Skin">Skin</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=3" title="Edit section: Skin"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The skin is similar to areas elsewhere, but is relatively thin<sup id="cite_ref-Cecil_1-0" class="reference"><a href="#cite_note-Cecil-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> and has more pigment cells. In diseased persons, these may wander and cause a discoloration of the lids. It contains sweat glands and hairs, the latter becoming eyelashes as the border of the eyelid is met.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The skin of the eyelid contains the greatest concentration of <a href="/wiki/Sebaceous_glands" class="mw-redirect" title="Sebaceous glands">sebaceous glands</a> found anywhere in the body.<sup id="cite_ref-Cecil_1-1" class="reference"><a href="#cite_note-Cecil-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Nerve_supply">Nerve supply</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=4" title="Edit section: Nerve supply"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In humans, the sensory nerve supply to the upper eyelids is from the <a href="/wiki/Infratrochlear" class="mw-redirect" title="Infratrochlear">infratrochlear</a>, <a href="/wiki/Supratrochlear" class="mw-redirect" title="Supratrochlear">supratrochlear</a>, <a href="/wiki/Supraorbital_nerve" title="Supraorbital nerve">supraorbital</a> and the <a href="/wiki/Lacrimal_nerve" title="Lacrimal nerve">lacrimal nerves</a> from the ophthalmic branch (V1) of the <a href="/wiki/Trigeminal_nerve" title="Trigeminal nerve">trigeminal nerve</a> (CN V). The skin of the lower eyelid is supplied by branches of the <a href="/wiki/Infratrochlear" class="mw-redirect" title="Infratrochlear">infratrochlear</a> at the medial angle. The rest is supplied by branches of the <a href="/wiki/Infraorbital_nerve" title="Infraorbital nerve">infraorbital nerve</a> of the maxillary branch (V2) of the trigeminal nerve. </p> <div class="mw-heading mw-heading3"><h3 id="Blood_supply">Blood supply</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=5" title="Edit section: Blood supply"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In humans, the eyelids are supplied with blood by two arches on each upper and lower lid. The arches are formed by <a href="/wiki/Anastomoses" class="mw-redirect" title="Anastomoses">anastomoses</a> of the <a href="/wiki/Lateral_palpebral_arteries" title="Lateral palpebral arteries">lateral palpebral arteries</a> and <a href="/wiki/Medial_palpebral_arteries" title="Medial palpebral arteries">medial palpebral arteries</a>, branching off from the <a href="/wiki/Lacrimal_artery" title="Lacrimal artery">lacrimal artery</a> and <a href="/wiki/Ophthalmic_artery" title="Ophthalmic artery">ophthalmic artery</a>, respectively. </p> <div class="mw-heading mw-heading3"><h3 id="Eyelashes">Eyelashes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=6" title="Edit section: Eyelashes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Eyelash" title="Eyelash">Eyelash</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Human_eye,_lateral_view.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Human_eye%2C_lateral_view.jpg/220px-Human_eye%2C_lateral_view.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Human_eye%2C_lateral_view.jpg/330px-Human_eye%2C_lateral_view.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Human_eye%2C_lateral_view.jpg/440px-Human_eye%2C_lateral_view.jpg 2x" data-file-width="1629" data-file-height="1221" /></a><figcaption>Eyelashes grow from the eyelid margin and project outwards and curl away from the eye, to protect the eye from foreign objects</figcaption></figure> <p>The <a href="/wiki/Eyelash" title="Eyelash">eyelashes</a> (or simply lashes) are hairs that grow on the edges of the upper and lower eyelids. The lashes are short (upper lashes are typically just 7 to 8 mm in length) hairs, though can be exceptionally long (occasionally up to 15 mm in length) and prominent in some individuals with <a href="/wiki/Trichomegaly" title="Trichomegaly">trichomegaly</a>. The lashes protect the eye from dust and debris by catching them via rapid <a href="/wiki/Blinking" title="Blinking">blinking</a> when the <a href="/wiki/Corneal_reflex" title="Corneal reflex">blink reflex</a> is triggered by the debris touching the lashes. Long lashes also play a significant part in <a href="/wiki/Physical_attractiveness" title="Physical attractiveness">facial attractiveness</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Function">Function</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=7" title="Edit section: Function"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The eyelids close or blink voluntarily and involuntarily to protect the eye from foreign bodies, and keep the surface of the <a href="/wiki/Cornea" title="Cornea">cornea</a> moist. The upper and lower human eyelids feature a set of <a href="/wiki/Eyelash" title="Eyelash">eyelashes</a> which grow in up to 6 rows along each eyelid margin, and serve to heighten the protection of the eye from dust and foreign debris, as well as from perspiration. </p> <div class="mw-heading mw-heading2"><h2 id="Clinical_significance">Clinical significance</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=8" title="Edit section: Clinical significance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Any condition that affects the eyelid is called eyelid disorder. The most common eyelid disorders, their causes, symptoms and treatments are the following: </p> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Stye02.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stye02.jpg/220px-Stye02.jpg" decoding="async" width="220" height="162" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stye02.jpg/330px-Stye02.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Stye02.jpg/440px-Stye02.jpg 2x" data-file-width="984" data-file-height="723" /></a><figcaption>Eyelid affected by <a href="/wiki/Stye" title="Stye">stye</a></figcaption></figure> <ul><li><b>Hordeolum</b> (<a href="/wiki/Stye" title="Stye">stye</a>) is an infection of the <a href="/wiki/Sebaceous_gland" title="Sebaceous gland">sebaceous glands</a> of <a href="/wiki/Gland_of_Zeis" title="Gland of Zeis">Zeis</a> usually caused by <i><a href="/wiki/Staphylococcus_aureus" title="Staphylococcus aureus">Staphylococcus aureus</a></i> <a href="/wiki/Bacteria" title="Bacteria">bacteria</a>, similar to the more common condition <a href="/wiki/Acne_vulgaris" class="mw-redirect" title="Acne vulgaris">Acne vulgaris</a>. It is characterized by an acute onset of symptoms and it appears similar to a red bump placed underneath the eyelid. The main symptoms of styes include pain, redness of the eyelid and sometimes swollen eyelids. Styes usually disappear within a week without treatment. Otherwise, <a href="/wiki/Antibiotic" title="Antibiotic">antibiotics</a> may be prescribed and home remedies such as warm water compresses may be used to promote faster healing. Styes are normally harmless and do not cause long lasting damage.</li> <li><b><a href="/wiki/Chalazion" title="Chalazion">Chalazion</a></b> (plural: <b>chalazia</b>) is caused by the obstruction of the oil <a href="/wiki/Glands" class="mw-redirect" title="Glands">glands</a> and can occur in both upper and lower eyelids. Chalazia may be mistaken for styes due to the similar symptoms. This condition is however less painful and it tends to be chronic. Chalazia heal within a few months if treatment is administered and otherwise they can resorb within two years. Chalazia that do not respond to topical medication are usually treated with surgery as a last resort.</li> <li><b><a href="/wiki/Blepharitis" title="Blepharitis">Blepharitis</a></b> is the irritation of the lid margin, where eyelashes join the eyelid. This is a common condition that causes inflammation of the eyelids and which is quite difficult to manage because it tends to recur.<sup id="cite_ref-Blepharitis_3-0" class="reference"><a href="#cite_note-Blepharitis-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> This condition is mainly caused by staphylococcus infection and scalp <a href="/wiki/Dandruff" title="Dandruff">dandruff</a>. Blepharitis symptoms include burning sensation, the feeling that there is something in the eye, excessive tearing, blurred vision, redness of the eye, light sensitivity, red and swollen eyelids, dry eye and sometimes crusting of the eyelashes on awakening. Treatment normally consists in maintaining a good hygiene of the eye and holding <a href="/wiki/Warm_compresses" class="mw-redirect" title="Warm compresses">warm compresses</a> on the affected eyelid to remove the crusts. Gently scrubbing the eyelid with the warm compress is recommended as it eases the healing process. In more serious cases, antibiotics may be prescribed.</li> <li><b><i><a href="/wiki/Demodex" title="Demodex">Demodex</a></i> mites</b> are a genus of tiny mites that live as commensals in and around the <a href="/wiki/Hair_follicle" title="Hair follicle">hair follicles</a> of numerous mammals including humans, cats and dogs. Human demodex mites typically live in the follicles of the eyebrows and eyelashes. While normally harmless, human demodex mites can sometimes cause irritation of the skin (<a href="/wiki/Demodicosis" title="Demodicosis">demodicosis</a>) in persons with weakened immune systems.</li> <li><b><a href="/wiki/Entropion" title="Entropion">Entropion</a></b> usually results from aging, but sometimes can be due to a <a href="/wiki/Congenital_defect" class="mw-redirect" title="Congenital defect">congenital defect</a>, a spastic eyelid muscle, or a scar on the inside of the lid that could be from surgery, injury, or disease.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Identifying_reliable_sources_(medicine)" title="Wikipedia:Identifying reliable sources (medicine)"><span title="Material near this tag needs references to reliable medical sources. (July 2023)">medical citation needed</span></a></i>]</sup> It is an <a href="/wiki/Asymptomatic" title="Asymptomatic">asymptomatic</a> condition that can, rarely, lead to <a href="/wiki/Trichiasis" title="Trichiasis">trichiasis</a>, which requires surgery. It mostly affects the lower lid, and is characterized by the turning inward of the lid, toward the <a href="/wiki/Eye" title="Eye">globe</a>.</li> <li><b><a href="/wiki/Ectropion" title="Ectropion">Ectropion</a></b> is another aging-related eyelid condition that may lead to chronic eye irritation and scarring. It may also be the result of <a href="/wiki/Allergy" title="Allergy">allergies</a> and its main symptoms are pain, excessive tearing and hardening of the eyelid conjunctiva.</li> <li><b>Laxity</b> is also another aging-related eyelid condition that can lead to dryness and irritation. Surgery may be necessary to repair the eyelid to its natural position. In certain instances, excessive lower lid laxity creates the Fornix of Reiss – a pocket between the lower eyelid and globe – which is the ideal location to administer topical ophthalmic medications.</li> <li><b>Eyelid <a href="/wiki/Edema" title="Edema">edema</a></b> is a condition in which the eyelids are swollen and tissues contain excess fluid. It may affect eye function when it increases the intraocular pressure. Eyelid edema is caused by <a href="/wiki/Allergy" title="Allergy">allergy</a>, <a href="/wiki/Trichiasis" title="Trichiasis">trichiasis</a> or infections.<sup id="cite_ref-Edema_4-0" class="reference"><a href="#cite_note-Edema-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The main symptoms are swollen red eyelids, pain, and itching. Chronic eyelid edema can lead to <a href="/wiki/Blepharochalasis" title="Blepharochalasis">blepharochalasis</a>.</li> <li><b>Eyelid <a href="/wiki/Tumor" class="mw-redirect" title="Tumor">tumors</a></b> may also occur. <a href="/wiki/Basal_cell_carcinoma" class="mw-redirect" title="Basal cell carcinoma">Basal cell carcinomas</a> are the most frequently encountered kind of cancer affecting the eyelid, making up 85% to 95% of all malignant eyelid tumors.<sup id="cite_ref-Tumors_5-0" class="reference"><a href="#cite_note-Tumors-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The tumors may be benign or malignant. Usually benign tumors are localized and removed before becoming a cancerous threat and before they become large enough to impair vision. Malignant tumors on the other hand tend to spread to surrounding areas and <a href="/wiki/Tissue_(biology)" title="Tissue (biology)">tissues</a>.</li> <li><b><a href="/wiki/Blepharospasm" title="Blepharospasm">Blepharospasm</a></b> (eyelid twitching) is an involuntary spasm of the eyelid muscle. The most common factors that make the muscle in the eyelid twitch are fatigue, stress, and caffeine.<sup id="cite_ref-Eyelid_twitch_6-0" class="reference"><a href="#cite_note-Eyelid_twitch-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Eyelid twitching is not considered a harmful condition and therefore there is no treatment available. Patients are however advised to get more sleep and drink less caffeine.</li> <li><b><a href="/wiki/Eyelid_dermatitis" title="Eyelid dermatitis">Eyelid dermatitis</a></b> is the inflammation of the eyelid skin. It is mostly a result of allergies or contact dermatitis of the eyelid. Symptoms include dry and flaky skin on the eyelids and swollen eyelids. The affected eyelid may itch. Treatment consists in proper eye hygiene and avoiding the allergens that trigger the condition. In rare cases, <a href="/wiki/Topical_cream" class="mw-redirect" title="Topical cream">topical creams</a> may be used but only under a doctor's supervision.</li> <li><b><a href="/wiki/Ptosis_(eyelid)" title="Ptosis (eyelid)">Ptosis</a></b> (drooping eyelid) is when the upper eyelid droops or sags due to weakness or paralysis of the levator muscle (responsible for raising the eyelid), or due to damage to nerves controlling the muscle. It can be a manifestation of the normal aging process, a congenital condition, or due to an injury or disease. Risk factors related to ptosis include diabetes, stroke, Horner syndrome, Bell's Palsy (compression/damage to Facial nerve), myasthenia gravis, brain tumor or other cancers that can affect nerve or muscle function.</li> <li><b>Ablepharia</b> (ablepharon) is the congenital absence of or reduction in the size of the eyelids.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading3"><h3 id="Surgery">Surgery</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=9" title="Edit section: Surgery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The eyelid surgeries are called <a href="/wiki/Blepharoplasty" title="Blepharoplasty">blepharoplasties</a> and are performed either for medical reasons or to alter one's facial appearance. </p><p>Most of the cosmetic eyelid surgeries are aimed to enhance the look of the face and to boost self-confidence by restoring a youthful eyelid appearance. They are intended to remove fat and excess skin that may be found on the eyelids after a certain age. </p><p>Eyelid surgeries are also performed to improve peripheral vision or to treat <a href="/wiki/Chalazion" title="Chalazion">chalazion</a>, eyelid tumors, <a href="/wiki/Ptosis_(eyelid)" title="Ptosis (eyelid)">ptosis</a>, extropion, <a href="/wiki/Trichiasis" title="Trichiasis">trichiasis</a>, and other eyelid-related conditions. </p><p>Eyelid surgeries are overall safe procedures but they carry certain risks since the area on which the operation is performed is so close to the eye. </p><p><span class="anchor" id="Variations_in_structure"></span> </p> <div class="mw-heading mw-heading2"><h2 id="Anatomical_variation">Anatomical variation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=10" title="Edit section: Anatomical variation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Epicanthic_fold" title="Epicanthic fold">Epicanthic fold</a></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:East_Asian_blepharoplasty_before_after.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/East_Asian_blepharoplasty_before_after.jpg/400px-East_Asian_blepharoplasty_before_after.jpg" decoding="async" width="400" height="91" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/East_Asian_blepharoplasty_before_after.jpg/600px-East_Asian_blepharoplasty_before_after.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/0/02/East_Asian_blepharoplasty_before_after.jpg 2x" data-file-width="634" data-file-height="144" /></a><figcaption>A South Korean woman, before (left) and after (right) undergoing <a href="/wiki/East_Asian_blepharoplasty" title="East Asian blepharoplasty">double eyelid surgery</a>. Note the presence of the <a href="/wiki/Epicanthic_fold" title="Epicanthic fold">epicanthic fold</a> in both photographs.</figcaption></figure> <p>An <a href="/wiki/Anatomical_variation" title="Anatomical variation">anatomical variation</a> in humans occurs in the creases and folds of the upper eyelid. </p><p>An <a href="/wiki/Epicanthic_fold" title="Epicanthic fold">epicanthic fold</a>, the skin fold of the upper eyelid covering the inner corner (medial <a href="/wiki/Canthus" title="Canthus">canthus</a>) of the eye, may be present based on various factors, including ancestry, age, and certain medical conditions. In some populations the trait is almost universal, specifically in East Asians and Southeast Asians, where a majority, up to 90% in some estimations, of adults have this feature.<sup id="cite_ref-Anchor_8-0" class="reference"><a href="#cite_note-Anchor-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>The upper eyelid crease is a common variation between people of <a href="/wiki/White_people" title="White people">White</a> and <a href="/wiki/East_Asian" class="mw-redirect" title="East Asian">East Asian</a> ethnicities.<sup id="cite_ref-pmid10408455_9-0" class="reference"><a href="#cite_note-pmid10408455-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Westerners commonly perceive the East Asian upper eyelid as a "single eyelid".<sup id="cite_ref-pmid10408455_9-1" class="reference"><a href="#cite_note-pmid10408455-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> However, East Asian eyelids are divided into three types – single, low, and double – based on the presence or position of the lid crease.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Jeong Sang-ki et al. of <a href="/wiki/Chonnam_University" class="mw-redirect" title="Chonnam University">Chonnam University</a>, <a href="/wiki/Kwangju" class="mw-redirect" title="Kwangju">Kwangju</a>, <a href="/wiki/Korea" title="Korea">Korea</a>, in a study using both Asian and White <a href="/wiki/Cadaver" title="Cadaver">cadavers</a> as well as four healthy young <a href="/wiki/Koreans" title="Koreans">Korean</a> men, said that "Asian eyelids" have more fat in them than those of White people.<sup id="cite_ref-pmid10408455_9-2" class="reference"><a href="#cite_note-pmid10408455-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Single/double eyelids are polygenic traits.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> A 2011 study also states that Saudis of "pure Arab" descent generally have higher upper lid crease and upper lid skin fold heights, compared to other ethnic groups.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Human_eye_with_large_pupil.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Human_eye_with_large_pupil.jpg/305px-Human_eye_with_large_pupil.jpg" decoding="async" width="305" height="172" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Human_eye_with_large_pupil.jpg/458px-Human_eye_with_large_pupil.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Human_eye_with_large_pupil.jpg/610px-Human_eye_with_large_pupil.jpg 2x" data-file-width="1606" data-file-height="904" /></a><figcaption>Eyelid skin pushing the central and inner upper <a href="/wiki/Eyelash" title="Eyelash">eyelashes</a> downwards into this person's field of vision, exacerbated by the excess length and thickness of their eyelashes. Note that the lashes in the outer portion of the eyelid are not pushed by the eyelid and curl upwards.</figcaption></figure> <p>In some individuals, an eyelid with excessive skin may push the eyelashes downwards and into the eye, obstructing vision in the case of long and thick lashes, and potentially causing corneal abrasion.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Prevalence">Prevalence</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=11" title="Edit section: Prevalence"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <caption>Prevalence of double eyelid among Asian populations<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Year </th> <th>Ethnic group </th> <th>Gender </th> <th>Prevalence of double eyelid </th></tr> <tr> <td>1896 </td> <td><a href="/wiki/Japanese_people" title="Japanese people">Japanese</a> </td> <td>Female </td> <td>82–83% </td></tr> <tr> <td>2000 </td> <td><a href="/wiki/Chinese_Singaporean" class="mw-redirect" title="Chinese Singaporean">Chinese Singaporean</a> </td> <td>Female </td> <td>66.7% </td></tr> <tr> <td rowspan="2">2007 </td> <td rowspan="2"><a href="/wiki/Koreans" title="Koreans">Korean</a> </td> <td>Male </td> <td>24.1% </td></tr> <tr> <td>Female </td> <td>45.5% </td></tr> <tr> <td rowspan="2">2008 </td> <td rowspan="2"><a href="/wiki/Asian_people" title="Asian people">Asian</a> </td> <td>Male </td> <td>30.3% </td></tr> <tr> <td>Female </td> <td>41.3% </td></tr> <tr> <td>2009 </td> <td>Asian </td> <td>N/A </td> <td>50.0% </td></tr> <tr> <td>2013 </td> <td><a href="/wiki/Han_Taiwanese" title="Han Taiwanese">Taiwanese Chinese</a> </td> <td>Female </td> <td>83.1% </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Society_and_culture">Society and culture</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=12" title="Edit section: Society and culture"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/Chinese_ideals_of_female_beauty#Double_eyelid" title="Chinese ideals of female beauty">Chinese ideals of female beauty § Double eyelid</a></div> <div class="mw-heading mw-heading3"><h3 id="Cosmetic_surgery">Cosmetic surgery</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=13" title="Edit section: Cosmetic surgery"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Blepharoplasty" title="Blepharoplasty">Blepharoplasty</a> is a cosmetic surgical procedure performed to correct deformities and improve or modify the appearance of the eyelids.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> With 1.43 million people undergoing the procedure in 2014,<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> blepharoplasty is the second most popular cosmetic procedure in the world (Botulinum toxin injection is first), and the most frequently performed cosmetic surgical procedure in the world.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/East_Asian_blepharoplasty" title="East Asian blepharoplasty">East Asian blepharoplasty</a>, or "double eyelid surgery", has been reported to be the most common aesthetic procedure in Taiwan and South Korea.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> Though the procedure is also used to reinforce muscle and tendon tissues surrounding the eye, the operative goal of East Asian blepharoplasty is to remove the <a href="/wiki/Adipose" class="mw-redirect" title="Adipose">adipose</a> and linear tissues underneath and surrounding the eyelids in order to crease the upper eyelid.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> A procedure to remove the <a href="/wiki/Epicanthal_fold" class="mw-redirect" title="Epicanthal fold">epicanthal fold</a> (i.e. an <a href="/wiki/Epicanthoplasty" title="Epicanthoplasty">epicanthoplasty</a>) is often performed in conjunction with an East Asian blepharoplasty.<sup id="cite_ref-pmid11910323_20-0" class="reference"><a href="#cite_note-pmid11910323-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p><p>The use of double sided tape or <a href="/wiki/Eyelid_glue" title="Eyelid glue">eyelid glue</a> to create the illusion of creased, or "double" eyelids has become a prominent practice in <a href="/wiki/China" title="China">China</a> and other Asian countries. There is a social pressure for women to have this surgery, and also to use the alternative (taping) practices.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> Blepharoplasty has become a common surgical operation that is actively encouraged, whilst other kinds of plastic surgery are actively discouraged in Chinese culture.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Death">Death</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=14" title="Edit section: Death"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>After <a href="/wiki/Death" title="Death">death</a>, it is common in many cultures to pull the eyelids of the <a href="/wiki/Deceased" class="mw-redirect" title="Deceased">deceased</a> down to close the eyes. This is a typical part of the <a href="/wiki/Last_offices" title="Last offices">last offices</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Additional_images">Additional images</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=15" title="Edit section: Additional images"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Gray866.png" class="mw-file-description" title="Horizontal section through the eye of an eighteen days' embryo rabbit. X 30"><img alt="Horizontal section through the eye of an eighteen days' embryo rabbit. X 30" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Gray866.png/120px-Gray866.png" decoding="async" width="120" height="96" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Gray866.png/180px-Gray866.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/Gray866.png/240px-Gray866.png 2x" data-file-width="500" data-file-height="401" /></a></span></div> <div class="gallerytext">Horizontal section through the eye of an eighteen days' embryo rabbit. X 30</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Gray888.png" class="mw-file-description" title="Sagittal section of right orbital cavity"><img alt="Sagittal section of right orbital cavity" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Gray888.png/120px-Gray888.png" decoding="async" width="120" height="101" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Gray888.png/180px-Gray888.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/Gray888.png/240px-Gray888.png 2x" data-file-width="550" data-file-height="464" /></a></span></div> <div class="gallerytext">Sagittal section of right orbital cavity</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Gray893.png" class="mw-file-description" title="Sagittal section through the upper eyelid"><img alt="Sagittal section through the upper eyelid" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Gray893.png/60px-Gray893.png" decoding="async" width="60" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Gray893.png/91px-Gray893.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Gray893.png/121px-Gray893.png 2x" data-file-width="253" data-file-height="500" /></a></span></div> <div class="gallerytext">Sagittal section through the upper eyelid</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Gray894.png" class="mw-file-description" title="The tarsi and their ligaments. Right eye; front view"><img alt="The tarsi and their ligaments. Right eye; front view" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Gray894.png/120px-Gray894.png" decoding="async" width="120" height="68" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Gray894.png/180px-Gray894.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Gray894.png/240px-Gray894.png 2x" data-file-width="600" data-file-height="338" /></a></span></div> <div class="gallerytext">The tarsi and their ligaments. Right eye; front view</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Gray896.png" class="mw-file-description" title="The lacrimal apparatus. Right side"><img alt="The lacrimal apparatus. Right side" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Gray896.png/113px-Gray896.png" decoding="async" width="113" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Gray896.png/169px-Gray896.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Gray896.png/226px-Gray896.png 2x" data-file-width="400" data-file-height="425" /></a></span></div> <div class="gallerytext">The lacrimal apparatus. Right side</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Slide2www.JPG" class="mw-file-description" title="Extrinsic eye muscle. Nerves of orbita. Deep dissection"><img alt="Extrinsic eye muscle. Nerves of orbita. Deep dissection" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Slide2www.JPG/120px-Slide2www.JPG" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Slide2www.JPG/180px-Slide2www.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Slide2www.JPG/240px-Slide2www.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Extrinsic eye muscle. Nerves of orbita. Deep dissection</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=16" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Cellulitis" title="Cellulitis">Cellulitis</a> – a bacterial infection involving the inner layers of the skin</li> <li><a href="/wiki/Dermatochalasis" title="Dermatochalasis">Dermatochalasis</a> – an excess of eyelid skin that may obstruct vision</li> <li><a href="/wiki/Gland_of_Moll" class="mw-redirect" title="Gland of Moll">Gland of Moll</a> – a modified sweat gland at the base of the eyelashes</li> <li><a href="/wiki/Hay-Wells_syndrome" class="mw-redirect" title="Hay-Wells syndrome">Hay-Wells syndrome</a> – a disorder often causing fusion of the eyelids</li> <li><a href="/wiki/Nictitating_membrane" title="Nictitating membrane">Nictitating membrane</a> – a third eyelid present in some animals</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Eyelid&action=edit&section=17" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-Cecil-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Cecil_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Cecil_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFGoldman2011" class="citation book cs1">Goldman, Lee (25 July 2011). <i>Goldman's Cecil Medicine</i> (24th ed.). 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Chicago: Encyclopædia Britannica, 2010.</span> </li> <li id="cite_note-Blepharitis-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-Blepharitis_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100414004836/http://www.nei.nih.gov/health/blepharitis/blepharitis.asp">"Facts About Blepharitis"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.nei.nih.gov/health/blepharitis/blepharitis.asp">the original</a> on 14 April 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">30 March</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Facts+About+Blepharitis&rft_id=http%3A%2F%2Fwww.nei.nih.gov%2Fhealth%2Fblepharitis%2Fblepharitis.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEyelid" class="Z3988"></span></span> </li> <li id="cite_note-Edema-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-Edema_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100315142647/http://www.uppereyelid.net/edema.html">"Upper Eyelid Edema Treatment and Symptoms"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.uppereyelid.net/edema.html">the original</a> on 15 March 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">30 March</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Upper+Eyelid+Edema+Treatment+and+Symptoms&rft_id=http%3A%2F%2Fwww.uppereyelid.net%2Fedema.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEyelid" class="Z3988"></span></span> </li> <li id="cite_note-Tumors-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-Tumors_5-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.eyecareamerica.org/eyecare/conditions/eye-tumors/index.cfm">"Eyelid and Orbital Tumors"</a><span class="reference-accessdate">. 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rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Human_regional_anatomy" title="Template:Human regional anatomy"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Human_regional_anatomy" title="Template talk:Human regional anatomy"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Human_regional_anatomy" title="Special:EditPage/Template:Human regional anatomy"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Human_regional_anatomy140" style="font-size:114%;margin:0 4em"><a href="/wiki/Human_body#Regional_groups" title="Human body">Human regional anatomy</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Human_body" title="Human body">Body</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><a href="/wiki/Human_skin" title="Human skin">Skin</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Human_head" title="Human head">Head</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hair" title="Hair">Hair</a></li> <li><a href="/wiki/Face" title="Face">Face</a> <ul><li><a href="/wiki/Forehead" title="Forehead">Forehead</a></li> <li><a href="/wiki/Cheek" title="Cheek">Cheek</a></li> <li><a href="/wiki/Chin" title="Chin">Chin</a></li> <li><a href="/wiki/Eyebrow" title="Eyebrow">Eyebrow</a></li> <li><a href="/wiki/Human_eye" title="Human eye">Eye</a></li> <li><a class="mw-selflink selflink">Eyelid</a></li> <li><a href="/wiki/Human_nose" title="Human nose">Nose</a></li> <li><a href="/wiki/Human_mouth" title="Human mouth">Mouth</a></li> <li><a href="/wiki/Lip" title="Lip">Lip</a></li> <li><a href="/wiki/Tongue" title="Tongue">Tongue</a></li> <li><a href="/wiki/Human_tooth" title="Human tooth">Tooth</a></li></ul></li> <li><a href="/wiki/Ear" title="Ear">Ear</a></li> <li><a href="/wiki/Jaw" title="Jaw">Jaw</a></li> <li><a href="/wiki/Mandible" title="Mandible">Mandible</a></li> <li><a href="/wiki/Occipital_bone" title="Occipital bone">Occiput</a></li> <li><a href="/wiki/Scalp" title="Scalp">Scalp</a></li> <li><a href="/wiki/Temple_(anatomy)" title="Temple (anatomy)">Temple</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Neck" title="Neck">Neck</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adam%27s_apple" title="Adam's apple">Adam's apple</a></li> <li><a href="/wiki/Throat" title="Throat">Throat</a></li> <li><a href="/wiki/Nape" title="Nape">Nape</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Torso" title="Torso">Torso</a> (Trunk)</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abdomen" title="Abdomen">Abdomen</a> <ul><li><a href="/wiki/Waist" title="Waist">Waist</a></li> <li><a href="/wiki/Midriff" title="Midriff">Midriff</a></li> <li><a href="/wiki/Navel" title="Navel">Navel</a></li></ul></li> <li><a href="/wiki/Vertebral_column" class="mw-redirect" title="Vertebral column">Vertebral column</a></li> <li><a href="/wiki/Human_back" title="Human back">Back</a></li> <li><a href="/wiki/Thorax" title="Thorax">Thorax</a> <ul><li><a href="/wiki/Breast" title="Breast">Breast</a></li> <li><a href="/wiki/Nipple" title="Nipple">Nipple</a></li></ul></li> <li><a href="/wiki/Pelvis" title="Pelvis">Pelvis</a></li> <li><a href="/wiki/Sex_organ" title="Sex organ">Genitalia</a> <ul><li><a href="/wiki/Human_penis" title="Human penis">Penis</a></li> <li><a href="/wiki/Scrotum" title="Scrotum">Scrotum</a></li> <li><a href="/wiki/Vulva" title="Vulva">Vulva</a></li></ul></li> <li><a href="/wiki/Human_anus" title="Human anus">Anus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Limb_(anatomy)" title="Limb (anatomy)">Limbs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Arm" title="Arm">Arm</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Shoulder" title="Shoulder">Shoulder</a></li> <li><a href="/wiki/Axilla" title="Axilla">Axilla</a></li> <li><a href="/wiki/Elbow" title="Elbow">Elbow</a></li> <li><a href="/wiki/Forearm" title="Forearm">Forearm</a></li> <li><a href="/wiki/Wrist" title="Wrist">Wrist</a></li> <li><a href="/wiki/Hand" title="Hand">Hand</a> <ul><li><a href="/wiki/Finger" title="Finger">Finger</a></li> <li><a href="/wiki/Nail_(anatomy)" title="Nail (anatomy)">Fingernail</a></li> <li><a href="/wiki/Thumb" title="Thumb">Thumb</a></li> <li><a href="/wiki/Index_finger" title="Index finger">Index</a></li> <li><a href="/wiki/Middle_finger" title="Middle finger">Middle</a></li> <li><a href="/wiki/Ring_finger" title="Ring finger">Ring</a></li> <li><a href="/wiki/Little_finger" title="Little finger">Little</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Human_leg" title="Human leg">Leg</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Buttocks" title="Buttocks">Buttocks</a></li> <li><a href="/wiki/Hip" title="Hip">Hip</a></li> <li><a href="/wiki/Thigh" title="Thigh">Thigh</a></li> <li><a href="/wiki/Knee" title="Knee">Knee</a></li> <li><a href="/wiki/Calf_(leg)" title="Calf (leg)">Calf</a></li> <li><a href="/wiki/Foot" title="Foot">Foot</a> <ul><li><a href="/wiki/Ankle" title="Ankle">Ankle</a></li> <li><a href="/wiki/Heel" title="Heel">Heel</a></li> <li><a href="/wiki/Toe" title="Toe">Toe</a></li> <li><a href="/wiki/Nail_(anatomy)" title="Nail (anatomy)">Toenail</a></li> <li><a href="/wiki/Sole_(foot)" title="Sole (foot)">Sole</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="The_orbit_of_the_eye127" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Orbital_anatomy" title="Template:Orbital anatomy"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Orbital_anatomy" title="Template talk:Orbital anatomy"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Orbital_anatomy" title="Special:EditPage/Template:Orbital anatomy"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="The_orbit_of_the_eye127" style="font-size:114%;margin:0 4em">The <a href="/wiki/Orbit_(anatomy)" title="Orbit (anatomy)">orbit</a> of the <a href="/wiki/Human_eye" title="Human eye">eye</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Bones</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Frontal_bone" title="Frontal bone">Frontal bone</a></li> <li><a href="/wiki/Zygomatic_bone" title="Zygomatic bone">Zygomatic bone</a></li> <li><a href="/wiki/Maxilla" title="Maxilla">Maxillary bone</a></li> <li><a href="/wiki/Sphenoid_bone" title="Sphenoid bone">Sphenoid bone</a></li> <li><a href="/wiki/Ethmoid_bone" title="Ethmoid bone">Ethmoid bone</a></li> <li><a href="/wiki/Palatine_bone" title="Palatine bone">Palatine bone</a></li> <li><a href="/wiki/Lacrimal_bone" title="Lacrimal bone">Lacrimal bone</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Extraocular_muscles" title="Extraocular muscles">Muscles</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Superior_rectus_muscle" title="Superior rectus muscle">Superior rectus muscle</a></li> <li><a href="/wiki/Inferior_rectus_muscle" title="Inferior rectus muscle">Inferior rectus muscle</a></li> <li><a href="/wiki/Lateral_rectus_muscle" title="Lateral rectus muscle">Lateral rectus muscle</a></li> <li><a href="/wiki/Medial_rectus_muscle" title="Medial rectus muscle">Medial rectus muscle</a></li> <li><a href="/wiki/Superior_oblique_muscle" title="Superior oblique muscle">Superior oblique muscle</a> <ul><li><a href="/wiki/Trochlea_of_superior_oblique" title="Trochlea of superior oblique">Trochlea of superior oblique</a></li></ul></li> <li><a href="/wiki/Inferior_oblique_muscle" title="Inferior oblique muscle">Inferior oblique muscle</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a class="mw-selflink selflink">Eyelid</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Levator_palpebrae_superioris_muscle" title="Levator palpebrae superioris muscle">Levator palpebrae superioris muscle</a></li> <li><a href="/wiki/Tarsus_(eyelids)" title="Tarsus (eyelids)">Tarsus</a></li> <li><a href="/wiki/Medial_palpebral_ligament" title="Medial palpebral ligament">Medial palpebral ligament</a></li> <li><a href="/wiki/Epicanthic_fold" title="Epicanthic fold">Epicanthic fold</a></li> <li><a href="/wiki/Meibomian_gland" title="Meibomian gland">Meibomian gland</a></li> <li><a href="/wiki/Moll%27s_gland" title="Moll's gland">Ciliary glands</a></li> <li><a href="/wiki/Eyelash" title="Eyelash">Eyelash</a></li> <li><a href="/wiki/Palpebral_fissure" title="Palpebral fissure">Palpebral fissure</a></li> <li><a href="/wiki/Canthus" title="Canthus">Canthus</a></li> <li><a href="/wiki/Gland_of_Zeis" title="Gland of Zeis">Gland of Zeis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lacrimal_apparatus" title="Lacrimal apparatus">Lacrimal apparatus</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lacrimal_canaliculi" title="Lacrimal canaliculi">Lacrimal canaliculi</a></li> <li><a href="/wiki/Lacrimal_caruncle" title="Lacrimal caruncle">Lacrimal caruncle</a></li> <li><a href="/wiki/Lacrimal_gland" title="Lacrimal gland">Lacrimal gland</a></li> <li><a href="/wiki/Accessory_lacrimal_glands" title="Accessory lacrimal glands">Accessory lacrimal glands</a> <ul><li><a href="/wiki/Krause%27s_glands" title="Krause's glands">Krause's glands</a></li> <li><a href="/wiki/Ciaccio%27s_glands" title="Ciaccio's glands">Ciaccio's glands</a></li></ul></li> <li><a href="/wiki/Lacrimal_lake" title="Lacrimal lake">Lacrimal lake</a></li> <li><a href="/wiki/Lacrimal_papilla" title="Lacrimal papilla">Lacrimal papilla</a></li> <li><a href="/wiki/Lacrimal_punctum" title="Lacrimal punctum">Lacrimal punctum</a></li> <li><a href="/wiki/Lacrimal_sac" title="Lacrimal sac">Lacrimal sac</a></li> <li><a href="/wiki/Nasolacrimal_duct" title="Nasolacrimal duct">Nasolacrimal duct</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Eyebrow" title="Eyebrow">Eyebrow</a> <ul><li><a href="/wiki/Unibrow" title="Unibrow">Unibrow</a></li></ul></li> <li><a href="/wiki/Conjunctiva" title="Conjunctiva">Conjunctiva</a> <ul><li><a href="/wiki/Plica_semilunaris_of_conjunctiva" title="Plica semilunaris of conjunctiva">Plica semilunaris</a></li></ul></li> <li><a href="/wiki/Orbital_septum" title="Orbital septum">Orbital septum</a></li> <li><a href="/wiki/Periorbita" title="Periorbita">Periorbita</a></li> <li><a href="/wiki/Suspensory_ligament_of_eyeball" title="Suspensory ligament of eyeball">Suspensory ligament of eyeball</a></li> <li><a href="/wiki/Tenon%27s_capsule" title="Tenon's capsule">Tenon's capsule</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-labelledby="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q48228#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata1297" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q48228#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata1297" style="font-size:114%;margin:0 4em"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q48228#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" 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