Ciwon kwantar da ƙwayar jikin mutum ne da ido wanda ke tsakanin retina da sclera. Ciwon kwakwalwa yana da zurfi a bayan ido a kimanin 0.2 mm kuma ya ragu zuwa 0.1 mm a cikin ɓangaren ido na ido. Ya ƙunshe da kwayoyin halitta wanda aka fizge a ciki kuma yana samar da oxygen da abubuwan gina jiki zuwa ga maƙasudin baya. Cikodin kwakwalwa yana samar da fili na uveal wanda ya hada da iris da jikin jiki.
Ana yin katako da nau'i-nau'i hudu:
- Layer mai walƙiya (babban jigon jini)
- Sattler ta Layer (matsakaici size jini)
- Choriocapillaris (capillaries)
- Bruch ta membrane. (membrane a cikin ɓangaren ciki na choroid.)
Hanyoyin launin melanin mai launin launin fata a cikin ƙuƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwa tana ɗaukar hasken da ƙayyade tunani a cikin idanu wanda zai iya lalata hangen nesa. An kuma tunanin melanin don kare tasoshin jini na choroidal a kan illa mai haske. Hanyoyin choroidal shine abin da yake haifar da "ja-ido" lokacin da aka ɗauka hotuna.
Har ila yau Known As: Kira; ƙwarƙwarar ƙwararriya
Baya ga samar da isasshen oxygen da jini zuwa ga kwakwalwa, jinin choroidal zai iya kwantar da hankali da kuma dumi dakatarwa. Har ila yau, ƙwayar ƙwayar cuta tana da sel da ke ɓoye abubuwa da ake zaton zasu shiga cikin ci gaban sclera. Magungunan ƙwayar cuta na iya canza kauri kuma waɗannan canje-canjen zasu iya motsa baya da baya, suna kawo hotunan zuwa cikin jirgi na mayar da hankali.
Wannan baya haifar da sakamako mai yawa amma yana da mahimmanci a ci gaban ido lokacin da yaro.
Idanunku da hangen nesa mai dadi dogara ne akan isasshen jini don aiki. Sabili da haka, ƙwayar ƙwayar ƙwayar cuta dole ne ta kasance lafiya kamar yadda zai yiwu a kowane lokaci. Lokacin da yanayin da ido yake ciki da ƙwayar ƙwayar ƙwayar cuta na kamuwa da kowace hanya, macula da jijiyar na iya gani.
Lokacin da aka yi amfani da magungunan macula da ƙwayar ido na jiki ko kuma mummunan tasiri, sakamakon yana sau da yawa tsananin karuwa a hangen nesa kuma wani lokaci har ma duk makanta. Bugu da ƙari, wasu cututtuka masu yawa za su iya faruwa a sakamakon wani kamuwa da cuta.
Cututtuka da cututtuka na Choroid
- Harkokin ƙwayar maganin ƙwayar maganin ƙwaƙwalwar ƙwayar cutar shi ne maganin jini a cikin sararin samaniya a sama da choroid ko a cikin kwakwalwa ta hanyar rushe katakon choroidal. Kodayake zai iya faruwa ba tare da wani lokaci ba, yana da mahimmanci. Yawanci yana faruwa ne sakamakon mummunan ido lokacin da ake yin ido. Zubar da ƙwaƙwalwar ƙwayar choroidal na jini zai iya haifar da alamun bayyanar. Jiyya yana kunshe da kwayar cutar steroid wanda ya fi sauƙi, murfin kyamara ya saukad da shi, kuma ido ya rage saukad da ido.
- Rashin katako na choroidal shine cikkaken ƙwaƙwalwa a cikin ƙwayar ƙwayar cuta, da membrane na Bruch da kuma epithelium na pigmentary retinal da ke faruwa a sakamakon mummunar cututtukan ido irin su samun bugawa tare da yatsa. Abin takaici, yawancin rukunin choroidal ya ƙunshi tsakiyar mai kwakwalwa, wanda ake kira macula. Macula tana ba mu damar samun kyakkyawan hangen nesa. Raunin yana haifar da asarar magunguna a cikin macula da asarar hangen nesa. Idan rupture ba a cikin macula ba, ana tsayar da hangen nesa.
- Choroidal nevi ne mai tarin sel ko alamar da ba a balaga ba a cikin ƙwayar ƙwayar ƙwayar cuta, wadda take da ƙwayar rigakafi a ƙarƙashin ginin. Yawanci ƙwararrun ƙwararrun kawai yana buƙatar kulawa. Dole likitanku za ta dauka wurin damuwa da kuma duba shi akai-akai. Yawanci basu buƙatar magani. Idan nevus choroidal yana da alamar alamar orange, ya bayyana girmansa, ko yana da siffar sabon abu, yana yiwuwa zai iya zama m cholanal melanoma. A wannan yanayin, ana buƙatar magani mai tsanani.
Dystrophies choroidal sune rukuni na cututtuka da suka mamaye da ke shafar ƙwayar choroid. Choroideremia, Gyrate atrophy, Tsarin tsakiya na tsakiya na katako, Diffuse katako choroidal da Pigmented paraurous retinochoroidal atrophy ne misalai na dystrophies choroidal. Lalacewar hangen nesa mai iya faruwa a wasu daga cikin wadannan dystrophies.
Chorioretinitis shine mafi yawan kwayar cutar da ke kai hare-haren. Irin wannan kumburi yakan haifar da sautuka mai duhu da kuma hangen nesa. Yaran yara da mutanen da ke fama da cutar ta Simplex Virus yawanci suna fama da wannan cuta. Ana amfani da maganin antibiotics da corticosteroids don magance chorioretinitis.