Ragewar ido: sanadin, alamu, magani

Ragewar ido: sanadin, alamu, magani

Retina, membrane mai mahimmanci ga hangen nesan mu, na iya kasancewa a cikin mawuyacin yanayi. Wannan babbar matsala ce, da za a gano tun da wuri don takaita sakamakon.

Yana lullubewa a bayan idon mu, retina wani membrane ne wanda ke ɗauke da nama mai juyayi kuma an haɗa shi da jijiyar gani. A kan shi ne ake samun photons na hasken haske, kafin a tura su zuwa kwakwalwa. Koyaya, wannan membrane ba shi da ƙarfi. Ya dogara da wasu biyu don samar da cikakkiyar ido. Saboda haka yana faruwa cewa retina daukan kashe, sashi ko gaba ɗaya, wanda zai iya haifar da makanta duka.

Kwallon idon ɗan adam ya ƙunshi yadudduka uku na jere na membranes, waɗanda ake kira kayan zane. Na farko, da rigar fibrous shine wanda muke iya gani: fari, yana rufe ido har zuwa kusurwar da ke gaba. Na biyu, wanda ke ƙasa, shine rigar rigar (ko wata). An yi shi a gaban iris, kuma a bayan wani Layer da ake kira choroid. A ƙarshe, manne akan rigar uveal, mun sami shahararre tunic mai juyayi, retina.

Ita kanta kwayar idon ta kasu kashi -kashi. Don haka, lokacin da muke magana game da rarrabuwar ƙwayar ido, ta fi ta duka Neural retina daura daepithelium pigment, bangonsa na waje. Haɗin su yana da rauni ƙwarai, kuma girgiza ko raunin zai iya haifar da ƙirƙirar buɗewa, wanda a ciki wani ruwa kamar vitreous zai iya shiga, kuma ya hanzarta aiwatar da rarrabuwa.

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