Inwebu iso. Ukutyabeka engaphandle iso

Yeso has izibonda ezimbini: ngaphambili nangesemva. Umgama phakathi kwabo kwi-avareji 24 mm. Oku bubungakanani inkulu lweliso lakho. Ubuninzi ubunzima yokugqibela umbilini ongaphakathi. Kucacile umxholo leyo singqongwe ingaphandle ezintathu. Le nto ndiyibhalayo uburharha zolwelo, lens umzimba vitreous. Macala onke core ukhozo lweliso engqongwe ezintathu iliso: ezinezikhondo (ngaphandle), imithambo (avareji) kunye net (ngaphakathi). Siya kukuxelela ngamnye kubo.

Le lwangaphandle

Eyona robust yi iqokobhe olungaphandle iliso, ezinezikhondo. Kuyinto ngenxa ukhozo lweliso lakhe uyakwazi ukugcina imilo yayo.

inwebu

Le inwebu okanye inwebu - ezincinane inxalenye yawo ngaphambili. ubungakanani bayo 1/6 ubukhulu lonke iqokobhe. Le inwebu kwi lweliso lakho lelona khaxa kuyo. Xa ifomu na phakathi-khaxa, lens into evuthelweyo elijonge umva phakathi. Malunga 0.5 mm yi ubukhulu engumzekelo i inwebu. Ubukhulu bayo enqamlezileyo 11-12 mm. Malunga nkqo, ubukhulu balo - 10,5-11 mm.

Le inwebu - amehlo esingxotyeni ngaphaya. Le nto ndiyibhalayo iiseli zeethishu stroma ngaphaya kwaye kwenwebu nokuqina eyenza ubuncwane zayo. Ngenxa imiphezulu ngaphambili nangesemva ezikufutshane ukuya ngomva stroma kunye nomda Icipande nembasa. Le yokugqibela imele into ephambili inwebu (modified), lo gama enye sisuka endothelium, nesigubungelo esizigubungeleyo kumphezulu angasemva, kwaye kananjalo imigca kwigumbi cipande yonke esweni kwabantu. epithelium wakubo babugubungela ubuso ngaphambili inwebu. Lenza ngaphandle imida elibukhali kwi epithelium yeqokobhe kokuxhuma. Ngenxa ukufana ka nyama, kunye nokungabikho iinqanawa emithanjeni negazi inwebu, njengoko kuchasene umaleko elandelayo, nto leyo eye albuginea sikhanya. Ngoku babuyele nencazelo sclera.

sclera

Albuginea eye ebizwa sclera. Le ngomva inxalenye enkulu yeqokobhe ongaphandle malunga 1/6 oko. Sclera - nokuqhubekeka ngqo inwebu. Kambe ke ibunjiwe, ngokungafaniyo le yokugqibela, imicu ye zomzimba nokuqina (ubukhulu) doped kunye nezinye kwimicu - elastin. Tunica eye iqokobhe, koko, ayikho ngaphaya. Le sclera kulo inwebu aqhubeke kancinci. bezel bukhanye kwenziwa umda phakathi kwabo. Ibizwa ngokuba udini i inwebu. Ngoku uyazi into albuginea amehlo. It sikhanya kuphela ekuqaleni, kufuphi inwebu.

amasebe sclera

Umphezulu sobuKristu ongaphandle sclera wambu conjunctiva. Le isifo amehlo. Kungenjalo, ibizwa ngokuba nokuqina. Njengoko ngokwahlulwa ngasemva, nantsi igquma kuphela endothelium. Umphezulu engaphakathi sclera elijonge lo choroid, kukwabandakanya endothelium. Xa lonke sclera yayo ubude kukutyeba efanayo. Eli candelo thinnest - indawo apho igcwale Imicu luvo optic, edulusele ngaphandle lweliso lakho. Kukho abunjwe isitya ngekroba. Sclera unalo ubukhulu inkulu kwi achazwe apha kweli luvo optic. Kulapha phakathi kwe-1 no-1.5 mm. Emva koko, lo ubukhulu kunciphisa, kufikelela kwi-ikhweyitha ka 0.4-0.5 mm. Ukhankanye ukuba indlela entsimini kuthinjwe izihlunu, sclera kwakhona sikhula, ubude bayo malunga 0.6 mm apha. Dlula therethrough kuphela luvo optic, kodwa lwemithambo kunye nempahla esimbaxa kunye luvo. Bakha uthotho imingxuma sclera, leyo abathweswe kuthiwa sclera. Kufutshane kongqameko le inwebu, enzulwini ngaphambili isebe lakhe, ubuxoki yonke ubude sinus le sclera, ukubaleka circularly.

choroid

Ngoko ke, kwafuneka ukuba achaze ngokufutshane ukutyabeka olungaphandle iliso. Ngoku nisinga abalinganiswa yegazi, nezaziwa avareji. Yahlulahlulwe yaba nxalenye zintathu zilandelayo ukungalingani. Eyokuqala kwezi - ezinkulu, emva, apho imigca malunga ezimbini esithathwini kumphezulu engaphakathi sclera. Ibizwa ngokuba choroid. Isigaba sesibini - ngumlinganiselo, kubekwe umda phakathi inwebu kunye sclera. Lo mzimba ciliary. Ekugqibeleni, isahlulo sesithathu (ngaphantsi, ngaphambili), ukudluliselwa ngokusebenzisa inwebu kuthiwa iris okanye iris.

Eneneni abapase choroid ngaphandle imida elibukhali kwi sobuKristu umzimba ciliary. Edge unamazinyo bodonga inokufana umda phakathi kwabo. Phantse kuyo yonke choroid nje omelene sclera, ngaphandle kummandla ezo ndawo, kwakunye nesabelo oluhambisana luvo optic. Le choroid kufuphi yokugqibela olubonakalayo inomngxuma apho ipleyiti Ekubeni sclera latticed ifayibha Umthambo-luvo. Umphezulu engaphandle kwayo lokuphumla ngaphezu kombala zigutyungelwe kunye neeseli endothelial. Kwenza indawo capillary vokrugsosudistoe kunye kumphezulu engaphakathi sclera.

Ezinye kunokudala umdla kuthi iqokobhe ukusekwa umaleko iinqanawa ezinkulu, imithambo bokwakha ipleyiti. Oku ikakhulu imithambo yegazi. okuzenzela nokuqina ilastiki, kwakunye iiseli mbala othambekele therebetween. maleko Secondary nemithambo alele umaleko enzulu. Lingaphantsi ulwehlo. Ukuze kube esayamene uthungelwano iinqanawa ezincinane emithanjeni ezenza semithambo-capillary nembasa. Oku ingakumbi kwindawo macular. Structureless maleko ezinezikhondo - izowuni zinzulu le choroid. Ibizwa ngokuba imbasa engundoqo. Kwinxalenye Icipande le choroid sikhula kancinci kwaye udlula ngaphandle kwemida elibukhali emzimbeni ciliary.

izixhobo ciliary

Le igutyungelwe kumphezulu engaphakathi kwipleyiti isiseko, nto leyo iingxwaba-sheet. Phetshana ibhekisela choroid. Iqumrhu ciliary , ubuninzi ibandakanya ciliary izihlunu, kwakunye umzimba stroma ciliary. Le yokugqibela imelwe kwizicwili zizityebi iiseli sakhi kunye friable, kananjalo nobuninzi lemigqomo.

Ezi ndima zilandelayo ahluka emzimbeni ciliary: isangqa ciliary, isabhokhwe ciliary kunye izihlunu ciliary. kuthatha Last ofisi yakhe yangaphandle ezimelene ngqo sclera. Imicu umsipha kakuhle izihlunu ciliary yenziwe. Phakathi kwabo ukwahlula imicu circumferential kunye meridional. Lwakutsha nje kuphuhliswa ngamandla. Zakha i ingalo leyo isebenza kwempixano le choroid. Ukususela sclera kunye kwigumbi engile sobuKristu ukuqala imicu yayo. Ukuya ngasemva, ngokuthe ngcembe, baphulukana kwi choroid. Le imisipha, ukusika, encothula phambili umzimba ciliary (inxalenye umva) kunye choroid (inxalenye ngaphambili). Ngoko ke, lo ukuqina ciliary umbhinqo kunciphisa.

ciliary imisipha

imicu setyhula bayabandakanyeka ukuyilwa kwemisipha setyhula. ukuncitshiswa yayo kunciphisa le mithambo ye ring leyo eyenza umzimba ciliary. Ngenxa kule ndawo ulungise ukuya ikhweyitha ye umbhinqo lens ciliary ezayo. Ibangela ukucuthwa umbhinqo. Ukongeza, ugobile lens kwandisa. Yile nxalenye yale setyhula ciliary kwezihlunu ukwabizwa ngokuba kwezihlunu ngokuveza lens.

isangqa ciliary

Le nxalenye posteromedial yomzimba ciliary. Arcuate shape, sinesifo umphezulu olungalinganiyo. isangqa Ciliary kuyaqhubeka ngaphandle imida elibukhali choroid.

siqhuqha ciliary

It lubaluleke sobuKristu-inxalenye. Ikhala ngendlela anda encinane, lwathi radially. Ezi ezibayeni ciliary ukuhambisa anteriorly kwinkqubo ciliary, ezo malunga 70 kwaye eziwileyo ngokukhululekileyo, njengokhozo umva lwecamera. Edge ajikelezayo amiliswe ngaphakathi kwindawo apho kukho utshintsho kwi ciliary pars plana phehla. Le ndawo sothimbo na ukulungiswa kwe umbhinqo lens ciliary.

iris

Forefoot lo iris, okanye iris. Ngokungafaniyo namanye amasebe, ukuba ayikho ngqo kwi khazi ifayibha. Iso le phambili komzimba ciliary (isebe yayo phambili). It lo moya ngokungqalileyo yaye ngandlel lisuswe inwebu. umngxuma Round ebizwa umfundi, uye kwiziko yayo. ebizwa Ciliated edge malunga ngohlangothi ophezu yonke achazwe apha iris. ezinawo yokugqibela ubunjwe zihlunu agudileyo, imithambo yegazi, izihlunu nokuqina, kwakunye kwimicu ezininzi luvo. Kombala eyenza "color" amehlo umphezulu emva iiseli iris.

izihlunu zakhe smooth izinto ngeendlela ezimbini: iphiramidi ebonisa unxibelelwano kunye setyhula. Umfundi circumferentially overlies umaleko setyhula. Yenza umsipha ukuba constricts umfundi. Imicu zilungiswe radially, uhlobo kwezihlunu, leyo nangabo.

Umphezulu Icipande iris khaxa kancinci anteriorly. Ngako oko, le phakathi ngasemva. Ngaphambili, xa achazwe apha na umfundi, iye isangqa encinane engaphakathi iris (zone pupillary). Malunga 1 mm ububanzi. I ring amancinci inomda ngaphandle sengathi umgca ezitenxileyo ngokwandisa circularly. Ibizwa ngokuba kwisangqa encinane iris. Inxalenye eseleyo kumphezulu ngaphambili kwi ububanzi malunga 3-4 mm. Ku fanele ngekhonkco engaphandle enkulu iris, okanye inxenye ciliary.

retina

Siye sahlolisisa ayizizo zonke iliso. Siye thaca ezinezikhondo kunye olujikeleza. Yintoni iqokobhe neliso alikafiki ingqalelo? Impendulo - yangaphakathi, net (oko kubizwa ngokuba retina). Eliqokobe imelwe iiseli zemithambo-luvo akhiwe kwiiseli ezininzi. imigca It ngaphakathi iliso. Le ixabiso elikhulu iso. Loo nto inika umbono lo mntu, kuba libonisa izinto. Ngoko ke ulwazi malunga kubo idluliselwe ingqondo nge-luvo optic. Noko ke, retina akaboni zonke efanayo. eye Isakhiwo iqokobhe yokuba isakhono inkulu ezibonwayo luphawulwa macula.

macula

It is a ngundoqo retina. Zonke sivile ukusuka esikolweni ukuba kwiretina kweentonga neziqina. Kodwa macula kukho iikhowuni kuphela, athi abenoxanduva umbono umbala. Ngaba oko kuye, bendingayi kuba siya kukwazi ukwahlula iinkcukacha entle, ukufunda. Xa macula kukho zonke iimeko zokubhaliswa reyi ubakhanyisele indlela enenkcukacha. Retina kule ndawo kuba thinner. Ngenxa kwimitha ukukhanya unokufumana ngqo cone ukukhanya-onovakalelo. imithambo yegazi retina ukuba kuphazamise nombono ocacileyo kwi macula no. zaso anikwe amandla ukusuka choroid ibekwe nzulu. Macula - ngundoqo retina, apho inani ezingundoqo cone (iiseli visual).

Yintoni ngaphakathi iqokobhe

Ngaphakathi iqokobhe zilungiswe ngaphambili kunye negumbi ngasemva (phakathi lens kanye iris). Ngaphakathi ziyahlutha ulwelo. Phakathi kwabo ibekwe vitreous kanye lens. imilo wokugqibela lens lenticular. Lens, njengoko inwebu refracts kwaye adlulisele reyi ukukhanya. Ngenxa yale ingqwalasela kumfanekiso retina. ijeli Vitreous of guquki. Eyeground wahlukana ilens ngalo.