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Available in 11 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-11" 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">11 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/%D9%82%D8%B7%D8%B9%D8%A9_%D8%A7%D9%84%D8%B9%D9%8A%D9%86_%D8%A7%D9%84%D8%A3%D9%85%D8%A7%D9%85%D9%8A%D8%A9" title="قطعة العين الأمامية – Arabic" lang="ar" hreflang="ar" data-title="قطعة العين الأمامية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%85%E0%A6%95%E0%A7%8D%E0%A6%B7%E0%A6%BF%E0%A6%97%E0%A7%8B%E0%A6%B2%E0%A6%95%E0%A7%87%E0%A6%B0_%E0%A6%B8%E0%A6%AE%E0%A7%8D%E0%A6%AE%E0%A7%81%E0%A6%96_%E0%A6%85%E0%A6%82%E0%A6%B6" title="অক্ষিগোলকের সম্মুখ অংশ – Bangla" lang="bn" hreflang="bn" data-title="অক্ষিগোলকের সম্মুখ অংশ" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Prednji_segment_o%C4%8Dne_jabu%C4%8Dice" title="Prednji segment očne jabučice – Bosnian" lang="bs" hreflang="bs" data-title="Prednji segment očne jabučice" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A0%CF%81%CF%8C%CF%83%CE%B8%CE%B9%CE%BF_%CF%84%CE%BC%CE%AE%CE%BC%CE%B1_%CF%84%CE%BF%CF%85_%CE%B2%CE%BF%CE%BB%CE%B2%CE%BF%CF%8D" title="Πρόσθιο τμήμα του βολβού – Greek" lang="el" hreflang="el" data-title="Πρόσθιο τμήμα του βολβού" 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/Segmento_anterior_del_ojo" title="Segmento anterior del ojo – Spanish" lang="es" hreflang="es" data-title="Segmento anterior del ojo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Deileog_thosaigh_na_s%C3%BAile" title="Deileog thosaigh na súile – Irish" lang="ga" hreflang="ga" data-title="Deileog thosaigh na súile" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%90%E0%B4%AC%E0%B5%8B%E0%B4%B3%E0%B4%BF%E0%B4%A8%E0%B5%8D%E0%B4%B1%E0%B5%86_%E0%B4%86%E0%B4%A8%E0%B5%8D%E0%B4%B1%E0%B5%80%E0%B4%B0%E0%B4%BF%E0%B4%AF%E0%B5%BC_%E0%B4%B8%E0%B5%86%E0%B4%97%E0%B5%8D%E0%B4%AE%E0%B5%86%E0%B4%A8%E0%B5%8D%E0%B4%B1%E0%B5%8D" title="ഐബോളിന്റെ ആന്റീരിയർ സെഗ്മെന്റ് – Malayalam" lang="ml" hreflang="ml" data-title="ഐബോളിന്റെ ആന്റീരിയർ സെഗ്മെന്റ്" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Fremre_augesegment" title="Fremre augesegment – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Fremre augesegment" data-language-autonym="Norsk nynorsk" 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searchaux" style="display:none">Front third of the eye</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">Anterior segment of eyeball</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Cataract_in_human_eye.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Cataract_in_human_eye.png/250px-Cataract_in_human_eye.png" decoding="async" width="250" height="181" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Cataract_in_human_eye.png/375px-Cataract_in_human_eye.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Cataract_in_human_eye.png/500px-Cataract_in_human_eye.png 2x" data-file-width="1543" data-file-height="1120" /></a></span><div class="infobox-caption"><a href="/wiki/Human_eye" title="Human eye">Human eye</a> Anterior Segment - Magnified view seen on examination with a slit lamp under diffuse illumination showing conjunctiva overlying the white sclera, transparent cornea, pharmacologically dilated pupil and cataract</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Details</th></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>segmentum anterius bulbi oculi</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=D000869">D000869</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/Q2359844" class="extiw" title="d:Q2359844">edit on Wikidata</a>]</small></div></td></tr></tbody></table> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Schematic_diagram_of_anterior_segment_human_eye.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Schematic_diagram_of_anterior_segment_human_eye.svg/350px-Schematic_diagram_of_anterior_segment_human_eye.svg.png" decoding="async" width="350" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Schematic_diagram_of_anterior_segment_human_eye.svg/525px-Schematic_diagram_of_anterior_segment_human_eye.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Schematic_diagram_of_anterior_segment_human_eye.svg/700px-Schematic_diagram_of_anterior_segment_human_eye.svg.png 2x" data-file-width="347" data-file-height="174" /></a><figcaption> Diagram of <a class="mw-selflink selflink">anterior segment</a> of a <a href="/wiki/Human_eye" title="Human eye">human eye</a> (<a href="/wiki/Transverse_plane" title="Transverse plane">horizontal section</a> of the right eye)<br /> 1. <a href="/wiki/Lens_(anatomy)" class="mw-redirect" title="Lens (anatomy)">Lens</a>, 2. <a href="/wiki/Zonule_of_Zinn" title="Zonule of Zinn">Zonule of Zinn or ciliary zonule</a>, 3. <a href="/wiki/Posterior_chamber" class="mw-redirect" title="Posterior chamber">Posterior chamber</a> and 4. <a href="/wiki/Anterior_chamber" class="mw-redirect" title="Anterior chamber">Anterior chamber</a> with 5. <a href="/wiki/Aqueous_humour" title="Aqueous humour">Aqueous humour</a> flow; 6. <a href="/wiki/Pupil" title="Pupil">Pupil</a>, 7. <a href="/wiki/Corneosclera" class="mw-redirect" title="Corneosclera">Corneosclera</a> with 8. <a href="/wiki/Cornea" title="Cornea">Cornea</a>, 9. <a href="/wiki/Trabecular_meshwork" title="Trabecular meshwork">Trabecular meshwork</a> and <a href="/wiki/Schlemm%27s_canal" title="Schlemm's canal">Schlemm's canal</a>. 10. <a href="/wiki/Corneal_limbus" title="Corneal limbus">Corneal limbus</a> and 11. <a href="/wiki/Sclera" title="Sclera">Sclera</a>; 12. <a href="/wiki/Conjunctiva" title="Conjunctiva">Conjunctiva</a>, 13. <a href="/wiki/Uvea" title="Uvea">Uvea</a> with 14. <a href="/wiki/Iris_(anatomy)" title="Iris (anatomy)">Iris</a>, 15. <a href="/wiki/Ciliary_body" title="Ciliary body">Ciliary body</a>.</figcaption></figure> <p>The <b>anterior segment</b> or <b>anterior cavity</b><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> is the front third of the <a href="/wiki/Eye" title="Eye">eye</a> that includes the structures in front of the <a href="/wiki/Vitreous_humour" class="mw-redirect" title="Vitreous humour">vitreous humour</a>: the <a href="/wiki/Cornea" title="Cornea">cornea</a>, <a href="/wiki/Iris_(anatomy)" title="Iris (anatomy)">iris</a>, <a href="/wiki/Ciliary_body" title="Ciliary body">ciliary body</a>, and <a href="/wiki/Lens_(anatomy)" class="mw-redirect" title="Lens (anatomy)">lens</a>.<sup id="cite_ref-Cassin_2-0" class="reference"><a href="#cite_note-Cassin-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-CIO_3-0" class="reference"><a href="#cite_note-CIO-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Within the anterior segment are two fluid-filled spaces: </p> <ul><li>the <a href="/wiki/Anterior_chamber" class="mw-redirect" title="Anterior chamber">anterior chamber</a> between the posterior surface of the cornea (i.e. the <a href="/wiki/Corneal_endothelium" title="Corneal endothelium">corneal endothelium</a>) and the iris.</li> <li>the <a href="/wiki/Posterior_chamber" class="mw-redirect" title="Posterior chamber">posterior chamber</a> between the iris and the front face of the vitreous.<sup id="cite_ref-Cassin_2-1" class="reference"><a href="#cite_note-Cassin-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li></ul> <p><a href="/wiki/Aqueous_humour" title="Aqueous humour">Aqueous humour</a> fills these spaces within the anterior segment and provides nutrients to the surrounding structures. </p><p>Some ophthalmologists and optometrists specialize in the treatment and management of anterior segment disorders and diseases.<sup id="cite_ref-CIO_3-1" class="reference"><a href="#cite_note-CIO-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <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=Anterior_segment_of_eyeball&action=edit&section=1" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Posterior_segment" class="mw-redirect" title="Posterior segment">Posterior segment</a></li> <li><a href="/wiki/Toxic_anterior_segment_syndrome" title="Toxic anterior segment syndrome">Toxic anterior segment syndrome</a></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=Anterior_segment_of_eyeball&action=edit&section=2" 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"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></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 class="citation journal cs1"><a class="external text" href="https://en.wikiversity.org/wiki/WikiJournal_of_Medicine/Medical_gallery_of_Blausen_Medical_2014">"Medical gallery of Blausen Medical 2014"</a>. <i>WikiJournal of Medicine</i>. <b>1</b> (2). 29 August 2014. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.15347%2FWJM%2F2014.010">10.15347/WJM/2014.010</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=WikiJournal+of+Medicine&rft.atitle=Medical+gallery+of+Blausen+Medical+2014&rft.volume=1&rft.issue=2&rft.date=2014-08-29&rft_id=info%3Adoi%2F10.15347%2FWJM%2F2014.010&rft_id=https%3A%2F%2Fen.wikiversity.org%2Fwiki%2FWikiJournal_of_Medicine%2FMedical_gallery_of_Blausen_Medical_2014&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAnterior+segment+of+eyeball" class="Z3988"></span></span> </li> <li id="cite_note-Cassin-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-Cassin_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Cassin_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Cassin, B. and Solomon, S. <i>Dictionary of Eye Terminology</i>. Gainesville, Florida: Triad Publishing Company, 1990.</span> </li> <li id="cite_note-CIO-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-CIO_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CIO_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.clinica-cotero.es/i/2-1-1.htm">"Departments. Anterior segment."</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060927122539/http://www.clinica-cotero.es/i/2-1-1.htm">Archived</a> September 27, 2006, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> Cantabrian Institute of Ophthalmology.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Anterior_segment_of_eyeball&action=edit&section=3" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?name=Anterior+Eye+Segment">Anterior+Eye+Segment</a> at the U.S. National Library of Medicine <a href="/wiki/Medical_Subject_Headings" title="Medical Subject Headings">Medical Subject Headings</a> (MeSH)</li></ul> <div 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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 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eye</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fibrous_tunic_of_eyeball" title="Fibrous tunic of eyeball">Fibrous tunic</a> <br />(outer)</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/Sclera" title="Sclera">Sclera</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/Episcleral_layer" title="Episcleral layer">Episcleral layer</a></li> <li><a href="/wiki/Schlemm%27s_canal" title="Schlemm's canal">Schlemm's canal</a></li> <li><a href="/wiki/Trabecular_meshwork" title="Trabecular meshwork">Trabecular meshwork</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cornea" title="Cornea">Cornea</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/Corneal_limbus" title="Corneal limbus">Limbus</a></li> <li><i>layers</i> <ul><li><a href="/wiki/Corneal_epithelium" title="Corneal epithelium">Epithelium</a></li> <li><a href="/wiki/Bowman%27s_layer" title="Bowman's layer">Bowman's</a></li> <li><a href="/wiki/Stroma_of_cornea" title="Stroma of cornea">Stroma</a></li> <li><a href="/wiki/Dua%27s_layer" title="Dua's layer">Dua's layer</a></li> <li><a href="/wiki/Descemet%27s_membrane" title="Descemet's membrane">Descemet's</a></li> <li><a href="/wiki/Corneal_endothelium" title="Corneal endothelium">Endothelium</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="5" style="width:1px;padding:0 0 0 2px"><div><figure class="noresize mw-ext-imagemap-desc-bottom-right" typeof="mw:File"><span title="1:posterior segment 2:ora serrata 3:ciliary muscle 4:ciliary zonules 5:Schlemm's canal 6:pupil 7:anterior chamber 8:cornea 9:iris 10:lens cortex 11:lens nucleus 12:ciliary process 13:conjunctiva 14:inferior oblique muscule 15:inferior rectus muscule 16:medial rectus muscle 17:retinal arteries and veins 18:optic disc 19:dura mater 20:central retinal artery 21:central retinal vein 22:optic nerve 23:vorticose vein 24:bulbar sheath 25:macula 26:fovea 27:sclera 28:choroid 29:superior rectus muscle 30:retina"><img alt="1:posterior segment 2:ora serrata 3:ciliary muscle 4:ciliary zonules 5:Schlemm's canal 6:pupil 7:anterior chamber 8:cornea 9:iris 10:lens cortex 11:lens nucleus 12:ciliary process 13:conjunctiva 14:inferior oblique muscule 15:inferior rectus muscule 16:medial rectus muscle 17:retinal arteries and veins 18:optic disc 19:dura mater 20:central retinal artery 21:central retinal vein 22:optic nerve 23:vorticose vein 24:bulbar sheath 25:macula 26:fovea 27:sclera 28:choroid 29:superior rectus muscle 30:retina" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Eye-diagram_no_circles_border.svg/200px-Eye-diagram_no_circles_border.svg.png" decoding="async" width="200" height="195" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Eye-diagram_no_circles_border.svg/300px-Eye-diagram_no_circles_border.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Eye-diagram_no_circles_border.svg/400px-Eye-diagram_no_circles_border.svg.png 2x" data-file-width="1237" data-file-height="1208" usemap="#ImageMap_0a6142ee86469b4f" resource="/wiki/File:Eye-diagram_no_circles_border.svg" /></span><map name="ImageMap_0a6142ee86469b4f"><area href="/wiki/Posterior_segment_of_eyeball" shape="circle" coords="50,21,7" alt="1: posterior segment" title="1: posterior segment" /><area href="/wiki/Ora_serrata" shape="circle" coords="38,30,7" alt="2: ora serrata" title="2: ora serrata" /><area href="/wiki/Ciliary_muscle" shape="circle" coords="28,40,7" alt="3: ciliary muscle" title="3: ciliary muscle" /><area href="/wiki/Zonule_of_Zinn" shape="circle" coords="20,53,7" alt="4: ciliary zonules" title="4: ciliary zonules" /><area href="/wiki/Schlemm%27s_canal" shape="circle" coords="12,66,7" alt="5: Schlemm's canal" title="5: Schlemm's canal" /><area href="/wiki/Pupil" shape="circle" coords="9,80,7" alt="6: pupil" title="6: pupil" /><area href="/wiki/Anterior_chamber_of_eyeball" shape="circle" coords="7,96,7" alt="7: anterior chamber" title="7: anterior chamber" /><area href="/wiki/Cornea" shape="circle" coords="7,111,7" alt="8: cornea" title="8: cornea" /><area href="/wiki/Iris_(anatomy)" shape="circle" coords="9,125,7" alt="9: iris" title="9: iris" /><area href="/wiki/Lens_cortex" shape="circle" coords="15,139,7" alt="10: lens cortex" title="10: lens cortex" /><area href="/wiki/Lens_nucleus" shape="circle" coords="22,152,7" alt="11: lens nucleus" title="11: lens nucleus" /><area href="/wiki/Ciliary_processes" shape="circle" coords="30,163,7" alt="12: ciliary process" title="12: ciliary process" /><area href="/wiki/Conjunctiva" shape="circle" coords="41,173,7" alt="13: conjunctiva" title="13: conjunctiva" /><area href="/wiki/Inferior_oblique_muscle" shape="circle" coords="133,189,7" alt="14: inferior oblique muscule" title="14: inferior oblique muscule" /><area href="/wiki/Inferior_rectus_muscle" shape="circle" coords="147,182,7" alt="15: inferior rectus muscule" title="15: inferior rectus muscule" /><area href="/wiki/Medial_rectus_muscle" shape="circle" coords="160,174,7" alt="16: medial rectus muscle" title="16: medial rectus muscle" /><area href="/wiki/Retinal_arteries_and_veins" shape="circle" coords="171,163,7" alt="17: retinal arteries and veins" title="17: retinal arteries and veins" /><area href="/wiki/Optic_disc" shape="circle" coords="180,152,7" alt="18: optic disc" title="18: optic disc" /><area href="/wiki/Dura_mater" shape="circle" coords="187,139,7" alt="19: dura mater" title="19: dura mater" /><area href="/wiki/Central_retinal_artery" shape="circle" coords="191,125,7" alt="20: central retinal artery" title="20: central retinal artery" /><area href="/wiki/Central_retinal_vein" shape="circle" coords="188,66,7" alt="21: central retinal vein" title="21: central retinal vein" /><area href="/wiki/Optic_nerve" shape="circle" coords="182,53,7" alt="22: optic nerve" title="22: optic nerve" /><area href="/wiki/Vorticose_veins" shape="circle" coords="174,41,7" alt="23: vorticose vein" title="23: vorticose vein" /><area href="/wiki/Tenon%27s_capsule" shape="circle" coords="162,30,7" alt="24: bulbar sheath" title="24: bulbar sheath" /><area href="/wiki/Macula_of_retina" shape="circle" coords="151,22,7" alt="25: macula" title="25: macula" /><area href="/wiki/Fovea_centralis" shape="circle" coords="136,13,7" alt="26: fovea" title="26: fovea" /><area href="/wiki/Sclera" shape="circle" coords="121,8,7" alt="27: sclera" title="27: sclera" /><area href="/wiki/Choroid" shape="circle" coords="107,7,7" alt="28: choroid" title="28: choroid" /><area href="/wiki/Superior_rectus_muscle" shape="circle" coords="93,7,7" alt="29: superior rectus muscle" title="29: superior rectus muscle" /><area href="/wiki/Retina" shape="circle" coords="79,8,7" alt="30: retina" title="30: retina" /></map><figcaption>1:posterior segment 2:ora serrata 3:ciliary muscle 4:ciliary zonules 5:Schlemm's canal 6:pupil 7:anterior chamber 8:cornea 9:iris 10:lens cortex 11:lens nucleus 12:ciliary process 13:conjunctiva 14:inferior oblique muscule 15:inferior rectus muscule 16:medial rectus muscle 17:retinal arteries and veins 18:optic disc 19:dura mater 20:central retinal artery 21:central retinal vein 22:optic nerve 23:vorticose vein 24:bulbar sheath 25:macula 26:fovea 27:sclera 28:choroid 29:superior rectus muscle 30:retina</figcaption></figure></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Uvea" title="Uvea">Uvea / vascular <br />tunic</a> (middle)</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/Choroid" title="Choroid">Choroid</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/Capillary_lamina_of_choroid" title="Capillary lamina of choroid">Capillary lamina of choroid</a></li> <li><a href="/wiki/Bruch%27s_membrane" title="Bruch's membrane">Bruch's membrane</a></li> <li><a href="/wiki/Sattler%27s_layer" title="Sattler's layer">Sattler's layer</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ciliary_body" title="Ciliary body">Ciliary body</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/Ciliary_processes" title="Ciliary processes">Ciliary processes</a></li> <li><a href="/wiki/Ciliary_muscle" title="Ciliary muscle">Ciliary muscle</a></li> <li><a href="/wiki/Pars_plicata" title="Pars plicata">Pars plicata</a></li> <li><a href="/wiki/Pars_plana" title="Pars plana">Pars plana</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Iris_(anatomy)" title="Iris (anatomy)">Iris</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/Stroma_of_iris" title="Stroma of iris">Stroma</a></li> <li><a href="/wiki/Pupil" title="Pupil">Pupil</a></li> <li><a href="/wiki/Iris_dilator_muscle" title="Iris dilator muscle">Iris dilator muscle</a></li> <li><a href="/wiki/Iris_sphincter_muscle" title="Iris sphincter muscle">Iris sphincter muscle</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Retina" title="Retina">Retina</a> (inner)</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%">Layers</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/Inner_limiting_membrane" class="mw-redirect" title="Inner limiting membrane">Inner limiting membrane</a></li> <li><a href="/wiki/Nerve_fiber_layer" class="mw-redirect" title="Nerve fiber layer">Nerve fiber layer</a></li> <li><a href="/wiki/Ganglion_cell_layer" title="Ganglion cell layer">Ganglion cell layer</a></li> <li><a href="/wiki/Inner_plexiform_layer" title="Inner plexiform layer">Inner plexiform layer</a></li> <li><a href="/wiki/Inner_nuclear_layer" title="Inner nuclear layer">Inner nuclear layer</a></li></ul> <ul><li><a href="/wiki/Outer_plexiform_layer" title="Outer plexiform layer">Outer plexiform layer</a></li> <li><a href="/wiki/Outer_nuclear_layer" title="Outer nuclear layer">Outer nuclear layer</a></li></ul> <ul><li><a href="/wiki/External_limiting_membrane" title="External limiting membrane">External limiting membrane</a></li> <li><a href="/wiki/Layer_of_rods_and_cones" title="Layer of rods and cones">Layer of rods and cones</a></li> <li><a href="/wiki/Retinal_pigment_epithelium" title="Retinal pigment epithelium">Retinal pigment epithelium</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Cells</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/Photoreceptor_cell" title="Photoreceptor cell">Photoreceptor cells</a> (<a href="/wiki/Cone_cell" title="Cone cell">Cone cell</a>, <a href="/wiki/Rod_cell" title="Rod cell">Rod cell</a>) → (<a href="/wiki/Retina_horizontal_cell" title="Retina horizontal cell">Horizontal cell</a>) → <a href="/wiki/Retina_bipolar_cell" title="Retina bipolar cell">Bipolar cell</a> → (<a href="/wiki/Amacrine_cell" title="Amacrine cell">Amacrine cell</a>) → <a href="/wiki/Retinal_ganglion_cell" title="Retinal ganglion cell">Retina ganglion cell</a> (<a href="/wiki/Midget_cell" title="Midget cell">Midget cell</a>, <a href="/wiki/Parasol_cell" title="Parasol cell">Parasol cell</a>, <a href="/wiki/Bistratified_cell" title="Bistratified cell">Bistratified cell</a>, <a href="/wiki/Giant_retinal_ganglion_cells" title="Giant retinal ganglion cells">Giant retina ganglion cells</a>, <a href="/wiki/Intrinsically_photosensitive_retinal_ganglion_cells" class="mw-redirect" title="Intrinsically photosensitive retinal ganglion cells">Photosensitive ganglion cell</a>) → <i>Diencephalon</i>: <a href="/wiki/Parvocellular_cell" title="Parvocellular cell">P cell</a>, <a href="/wiki/Magnocellular_cell" title="Magnocellular cell">M cell</a>, <a href="/wiki/Koniocellular_cell" title="Koniocellular cell">K cell</a>, <a href="/wiki/Muller_glia" class="mw-redirect" title="Muller glia">Muller glia</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-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Macula_of_retina" class="mw-redirect" title="Macula of retina">Macula</a> <ul><li><a href="/wiki/Perifovea" title="Perifovea">Perifoveal area</a></li> <li><a href="/wiki/Parafovea" title="Parafovea">Parafoveal area</a></li> <li><a href="/wiki/Fovea_centralis" title="Fovea centralis">Fovea</a> <ul><li><a href="/wiki/Foveal_avascular_zone" title="Foveal avascular zone">Foveal avascular zone</a></li> <li><a href="/wiki/Foveola" title="Foveola">Foveola</a></li></ul></li></ul></li> <li><a href="/wiki/Optic_disc" title="Optic disc">Optic disc</a> <ul><li><a href="/wiki/Optic_cup_(anatomical)" title="Optic cup (anatomical)">Optic cup</a></li></ul></li> <li><a href="/wiki/Ora_serrata" title="Ora serrata">Ora serrata</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Anatomical regions <br />of the eye</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 class="mw-selflink selflink">Anterior segment</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/Accessory_visual_structures" title="Accessory visual structures">Adnexa</a> (<a href="/wiki/Eyebrow" title="Eyebrow">Eyebrow</a>, <a href="/wiki/Eyelid" title="Eyelid">Eyelid</a>, <a href="/wiki/Conjunctiva" title="Conjunctiva">Conjunctiva</a>, <a href="/wiki/Lacrimal_system" class="mw-redirect" title="Lacrimal system">Lacrimal system</a>, <a href="/wiki/Orbit_(anatomy)" title="Orbit (anatomy)">Orbit</a>)</li> <li><a href="/wiki/Fibrous_tunic" class="mw-redirect" title="Fibrous tunic">Fibrous tunic</a></li> <li><a href="/wiki/Anterior_chamber_of_eyeball" title="Anterior chamber of eyeball">Anterior chamber</a></li> <li><a href="/wiki/Aqueous_humour" title="Aqueous humour">Aqueous humour</a></li> <li><a href="/wiki/Iris_(anatomy)" title="Iris (anatomy)">Iris</a></li> <li><a href="/wiki/Posterior_chamber_of_eyeball" title="Posterior chamber of eyeball">Posterior chamber</a></li> <li><a href="/wiki/Ciliary_body" title="Ciliary body">Ciliary body</a></li> <li><a href="/wiki/Lens_(anatomy)" class="mw-redirect" title="Lens (anatomy)">Lens</a> <ul><li><a href="/wiki/Capsule_of_lens" title="Capsule of lens">Capsule of lens</a></li> <li><a href="/wiki/Zonule_of_Zinn" title="Zonule of Zinn">Zonule of Zinn</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Posterior_segment_of_eyeball" title="Posterior segment of eyeball">Posterior segment</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/Vitreous_chamber" title="Vitreous chamber">Vitreous chamber</a> <ul><li><a href="/wiki/Vitreous_body" title="Vitreous body">Vitreous body</a></li></ul></li> <li><a href="/wiki/Retina" title="Retina">Retina</a></li> <li><a href="/wiki/Choroid" title="Choroid">Choroid</a></li></ul> </div></td></tr></tbody></table><div></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" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Corneal_keratocyte" title="Corneal keratocyte">Keratocytes</a></li> <li><a href="/wiki/Ocular_immune_system" title="Ocular immune system">Ocular immune system</a></li> <li><a href="/wiki/Optical_coherence_tomography#Ophthalmology" title="Optical coherence tomography">Optical coherence tomography</a></li> <li><a href="/wiki/Eye_care_professional" title="Eye care professional">Eye care professional</a></li> <li><a href="/wiki/Eye_disease" title="Eye disease">Eye disease</a></li> <li><a href="/wiki/Refractive_error" title="Refractive error">Refractive error</a></li> <li><a href="/wiki/Accommodation_(eye)" class="mw-redirect" title="Accommodation (eye)">Accommodation</a></li> <li><i>Physiological Optics</i></li> <li><a href="/wiki/Visual_perception" title="Visual perception">Visual perception</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-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a>: National <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q2359844#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, 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