Iliso liyilungu elibona ukukhanya kwaye ithumela iimpawu kunye ne-optic nerve engqondweni. Kubantu, iliso liyilungu elixabisekileyo elinika ithuba lokubona. Ivumela ukukhanya kwembono kunye nombono, kubandakanywa nokwazi ukwahlula phakathi kwemibala kunye nobunzulu.
Nangona ubuncinci bubungakanani, iliso lilungu elincomekayo. Iliso li malunga ne-inch ububanzi obubanzi, 1 inch deep and 0.9 intshi ende.
Iliso lomuntu linamaqondo angama-200 angama-degree angabonakali kwaye libona imibala yezigidi ezili-10 kunye nemibala. Abantu banamehlo amabini avumela ukuba sibe nokuqonda okucace ngakumbi kunye ne-binocular stereopsis.
I-Anatomy yeYiso
- I-Cornea - I- cornea isakhiwo esicacileyo, esifana nesigodlo esecaleni langaphambili lesiso. I-cornea ihambisa 2/3 yamandla okuphikisa kwiso.
- I-Conjunctiva - I-conjunctiva yi-membrane ye-mucus ehlanganisa ubuso belihlo kunye nenxalenye yangaphakathi yeentloko zeentloko.
- I-Sclera - I-sclera yimibala emhlophe, eqinekileyo, yangaphandle. I-sclera iyaqhubeka ne-cornea.
- Iris - Iris iyisisu esinemibala enemizimba emibini elawula ukunyanzelisa umfundi kunye nokuphucula umfundi. Iris isebenza njenge-diaphragm elawula ukukhanya okuvunyelwe kwiso. Iris yinxalenye ebombala yeso.
- Umfundi - Umfundi ungumngxuma phakathi kwe-iris apho ukukhanya kudlulela kwi-retina. Umfundi mnyama kuba ukukhanya okuvunyelwe kwijoni kufakwe kwi-retina.
- Inkundla yangaphambili - Ikamelo langaphambili ligciniweyo eligcwala amanzi phakathi kwe-iris kunye ne-inner cornea ephakathi kwe-endothelium. I-humor humor yi-fluid ezalisa igumbi langaphambili
- Iimfestile zentsimbi - Iingxube zengxube yintsimbi yesikhumba esisijikeleze isiseko se-cornea, kwinqanaba lelihlo. I-meshwork ye-trabecular iyaqhubeka kunye nomzimba we-ciliary. Inoxanduva lokukrazula i-humor ye-canal (canal) kunye ne-blood system.
- I-Crystalline Lens - I-lens Crystalline inika i-1/3 yokukhankanya okanye igxininise amandla kwiso. Yisishubhu esichukumisayo esingashintsha isimo sokunyusa okanye ukunciphisa amandla ayo. Ngenxa yokuba ingatshintsha isimo, ivumela iso ukuba ligxilise kwizinto eziphakathi kunye nezikufutshane.
- Umzimba weCiliary - I- lens yama-Crystal ifakwe kwi-ciliary body by lensules. Umzimba we-ciliary ngumsizi onokubambisana ukutshintsha umlo we-lens. Oku kuvumela abantu ukuba bagxininise ngqalelo kwizinto ezikufuphi. Olunye umsebenzi womzimba we-ciliary ukuvelisa i-humor humor ephuma kumbindi wangaphakathi.
- I-Retina - I-retina yinyama ebonakalayo ebonakalayo ethatha amandla okukhanya kunye nokudluliselwa kwamandla kwintliziyo njengengqondo
- I-nertic Optic - I-nertic optic iyinethwekhi yamaseli enomzimba afumana iimpembelelo ukusuka kumgca we-nerve fiber kwi-retina. Idlulisa impembelelo yengqondo kwiingqondo.