Kanjani yeso.

Inhlamvu yeso, noma isitho obonayo, naphezu lingakanani amancane, has a isakhiwo eziyinkimbinkimbi kakhulu yokwakheka. Ngendlela embi lokhu umzimba has ukuma indilinga, engesiyo ngempela ngabaphelele, njengoba phambi isabelo saso ebonakalayo has a ugobile mkhulu kunezinhliziyo kufihlwe ebusweni ezingemuva. Leli qiniso inquma usayizi nokwehluka amehlo bacondze etindzaweni letehlukene. Ngenxa convexity yomzimba cornea anterior-posterior ubukhulu ngobukhulu. Ngokwesilinganiso, abantu omdala onempilo enhle, iseduze 24 mm. Transverse kanye eksisi eqonde ngqo phezulu cishe afanayo: ubukhulu isilinganiso eksisi transverse esweni kuyinto 23.6 mm 23.3 mm ngesikhathi mpo.

Isakhiwo uthinta inhlamvu yeso

Uhlaka umbono, kukhona ezintathu igobolondo ezinkulu imisebenzi abahlukene.

1. emgodleni kwangaphandle noma fibrous. It ezikhonjwe izingxenye ezimbili, okuyizinto ngempela ezihluke anatomically. Ingxenye elikhulu ingubo fibrous fanele sclera, noma Tunica albuginea, kanti bonke abanye - cornea. I sclera kuyinto Indwangu ngokuphelele non-okusobala, okuyinto has a luhlaza olumhlophe. Yingenxa umbala wabo, inhlamvu yeso, ikakhulukazi ingxenye opaque amaprotheni eliye labizwa phezu kwazo. Ngo umkhuba emtholampilo, njengoba sclera kungathola izimo ezihlukahlukene sokugembula ezenzeka iso futhi emzimbeni iyonke. Ngakho, ububomvu we inhlamvu yeso kungase kubonise ukuvuvukala acute e uhlaka umbono: conjunctivitis, keratitis, uveitis, njll A yellowing Tunica albuginea ubufakazi ongaqondile isifo sesibindi - Hepatitis. Inhlamvu yeso, elibonisa phambili cornea livela kule ndawo ababethi onsundu, oluhlaza noma okwesibhakabhaka. Nokho, lesi akusona cornea kanye iris iyabonakala kulo. I-cornea nakanjani kungekho nto enemibala emihle futhi esobala, azikho imithambo yegazi, kuphela yinhlanganisela kwalapho, silivumele libe ingxenye ebucayi kakhulu emzimbeni. Uma uthinta inhlamvu yeso umelwe iphesenti izingxenye emgodleni wayo lunemicu ke cornea ebangela esingaphansi 16%.
2. Isilinganiso, noma choroid. Kuyinto eseduze lunemicu kodwa hhayi yaphelela, kodwa kuphela ingxenye yayo scleral. Lapho sclera ingena cornea, indlela semithambo uyashiywa ke futhi zibekwe kusukela cornea. Igobolondo phakathi ukuhlukanisa izingxenye ezintathu: iris, ciliary (ciliary) umzimba , futhi choroid. Iris ukhonza njengelungu diaphragm, elawula ecucuza elikhanyayo kanjalo lingene lijule amehlo akhe, svetovosprinimayuschim wakhe izakhiwo. Umlawuli umsebenzi uthatha umfundi, ezingasetshenziswa ukwandisa lapho ukukhanya ukuntula futhi ayibanzi - okwedlula yayo. Umzimba ciliary kuyadingeka yokwenza uketshezi njalo intraocular adingekayo ukusuthisa iso, yokulondoloza ke ithoni. I choroid, noma choroidal, emelelwe inethiwekhi semithambo usinika izakhiwo yangaphakathi esweni.
3. Yangaphakathi noma i-retina. Lena ingxenye ebaluleke kakhulu isitho kombono iyaphendula ukukhanyisa futhi adlulisele kuluthola esizibonayo ku ebuchosheni izakhiwo cortical. Retina - izicubu mncane kakhulu futhi usentekenteke, ngokuvamile izindawo ezimbili eziyinhloko: i-ciliary esesikhundleni amaseli umahluko kakhulu, futhi umsebenzi optical lapho lezi amaseli. ukuzihlukanisa kwabo (umugqa jagged) kuyabonakala ngokuhamba uphenyo ezifana tsikloskopiya lapho zihlolwa fundus.

I inhlamvu yeso ngaphandle amagobolondo ngaphakathi Vitreous, okuyinto ulunika ukuma sici oyindilinga futhi ehilelekile kwalungiswa izinkunga zokubona kanye lens, yona ehilelekile izinqubo accommodative futhi kwalungiswa izinkunga zokubona lwemishayo ukukhanya.