A ib txwm fundus uas qhov tob tob choroid muab qhov pom ntawm qhov tsaus nti polygonal ntawm cov hlab ntsha choroidal, tshwj xeeb tshaj yog nyob rau hauv periphery.
Tigroid txhais li cas?
1: muaj kab txaij lossis pom pom kev hloov pauv hauv lub qhov muag ua rau tigroid fundus. 2: yog los yog muaj Nissl tshuaj.
txhais li cas los ntawm tessellated fundus?
Tessellated fundus txhais tau tias yog xwm txheej uas cov hlab ntsha choroidal tuaj yeem pom los ntawm retina vim txo qis pigmentation lossis hypoplasia ntawm cov xim ntawm lub paj hlwb(RPE) [13].
Dab tsi ua rau tessellated fundus?
Txawm li cas los xij, choroid ua nyias dua li qhov ntev axial elongates, thiab cov xim melanin tsawg dua yuav nyob nruab nrab ntawm cov hlab ntsha choroidal thiab pem hauv ntej ntawm lub qhov muag. Vim tias cov hlab ntsha nruab nrab thiab cov hlab ntsha loj ntawm choroid tau pom ntau dua, nws yuav ua rau cov fundus tshwm simsellated ntau dua.
nyiaj txiag ntawm qhov muag nyob qhov twg?
Fundus yog hauv qab lossis hauv paus ntawm txhua yam. Hauv cov tshuaj, nws yog ib lub ntsiab lus dav dav rau sab hauv ntawm lub cev hollow. Lub ocular fundus yog cov sab hauv ntawm lub qhov muag ua los ntawm Sensory Retina, Retinal Pigment Epithelium, Bruch's Membrane, thiab Choroid.
