Iris. Zvakakurukurwa nemamiriro womunhu ziso

The Iris ndiyo Anterior chikamu choroid. Zviri nhete chaizvo peripheral zvinoriumba izvozvo. Iye ciliary (ciliary) muviri uye choroid   vari vatatu huru zvikamu vascular turakiti, akaumba munguva ina sere mwedzi fetus.

The Iris achiumbwa kumativi nemanomwe svondo panzvimbo pamucheto mukombe dzinonzi optic ari "superposition" yacho mesoderm. By rechishanu romwedzi Iris sphincter aumbwa - the tsandanyama anokonzera kuderera mboni kukura. Papera chinguva ipapo dilator. Ichi chinhu womukati tsandanyama vakazochinja ichapa okubhadhara. Somugumisiro Anobvumirana uye coherent kusakarongeka pakati sphincter uye dilator Iris diaphragm anoita basa kuti zvinobudirira anoita chekubuda rakapinza chiedza danda. Pakazosvika mwedzi wechitanhatu zvakazara kuumbwa veshure pigmentary epithelial tishu. Izvi inopedzisa paumbwe dzinokosha pezvakaitwa wegadziriro.

Pakarepo zvakananga nevanhu cornea pakati Iris kwevanhu ziso haaiti. Pakati paro uye rusvingo rwokunze kusiya chiduku nzvimbo - kamuri pamberi iyo izere aqueous (kamuri) nounyoro.

Haachaoni Iris ane chimiro kumativi mundiro ine dhayamita kweinenge gumi millimeters uye mukomberedzo anenge makumi matatu namasere millimeters. At payo chinhu raundi buri kuburikidza izvo chiedza chinopinda - mboni. Ndiye akashandisa waidzora chitsama mwaranzi kupinda ziso. Mboni kwemavara kunobva mwero okuvhenekesa. The duku reraundi danda, chichavawo chikuru kwayo dhayamita. avhareji mutengo wayo anenge matatu millimeters. Panguva iyoyowo vechidiki mboni dhayamita rinowanzova zvishoma kupfuura vakwegura. Izvi zvinotsanangurwa nokuti pamusoro nguva pane atrophy pamusoro dilator uye sphincter fibrosis.

The chikuru ehupfumi ari chinhu meso sezvo maziso, zviri ruvara, muenzaniso, mamiriro mboni aperture uye nzvimbo hama kune dzimwe hurongwa ziso. Vose zvinokonzerwa mamwe maitiro anatomical kwayo mamiriro.

The rukoko pamberi ane radiarnoy Iris striation, izvo zvinopa izvozvo zvokuyamura resi imwe mhando. Kudzamisa ari mutswe-mhando, riri kwaro connective zvinyama, akadana lacunae. Ikaramba ichiserera mumwe-hafu millimeter yakafanana pupillary unopinza, riri bryzhzhi (pinion). Vachigoverana Iris muzvikamu zviviri: rokunze (ciliary) uye dzimwe - pupillary. concentric grooves anotsanangurwa pakutanga mapazi. Ndivo zvakananga mugumisiro kuderedza uye kuswatura Iris panguva yayo kufamba.

Rear pamberi choroid vakaparadzana raimiririra dilator rayo ruvara uye muganhu akaturikidzana. Chokutanga pane pupillary pamucheto anoumba munhu nomukombero kana masa. Front Front Iris unotora ane Iris stroma dzokunze muganhu rukoko.