I-band keratopathy iyisifo esithinta i- cornea , isakhiwo esicacile se-dome-like on the front of the eye. I-band keratopathy ibonakala nge-band ehambisana ne-calcium efaka i-cornea.
Ukufakwa kwesibonakaliso kubonakala kubunwe futhi kugcwele-grey kumbala futhi kubukeka okufana ne-swiss-cheese. I-calcium iyofakwa kwi-cornea emkhatsini wendawo evulekile futhi evezwe phakathi kwamajwabu amehlo lapho iso livulekile.
Izimbangela
Kucatshangwa ukuthi i-band keratopathy ibangelwa izimo ezandisa amazinga e-calcium emzimbeni afana nesifo sezinso, i-vitamin D ngokweqile, amazinga e-hormone e-thyroid, i-sarcoidosis, i-lupus ne-Paget's disease, isimo lapho kunqamuka khona ngokweqile kwakho amathambo.
Izinyembezi zinezinhlamvu ezincane ze-calcium. Ukufudumala okuvamile kwezinyembezi zakho kudala ukuhlushwa kwe-calcium. Lokhu kwenzeka okuningi engxenyeni ye-cornea evulekile emoyeni. Kodwa-ke, lapho izinyembezi zinezinga eliphezulu kakhulu kunezinga elivamile le-calcium, lokhu kwenzeka ngezinga eliphezulu kakhulu. Ngenxa yalolu hlobo olungavamile lwezinyembezi, izinga le-acidity lezinyembezi lishintsha kwenza inqubo yenzeke ngokushesha futhi iholele ekutheni i-band keratopathy. Izimo ezithile zezokwelapha okukhulunywe ngenhla ezenza ukuba i-calcium ikhule emzimbeni ingabangela ukuthi lokhu kwenzeke. Kodwa-ke, i-calcium ingakha futhi ezinyembezini ngezimo zeso ezibangelwa ukuvuvukala okungapheli.
Futhi, abantu abanezimo ezibangela ukuvuvukala kwe-cornea noma ukuchithwa kwe-cell corneal kuye kwaziwa ukuthuthukisa i-band keratopathy.
Izimo zamehlo ezenza ukuvuvukala okungapheli kungabangela nokuthi i-band keratopathy ikhule:
- i- glaucoma yesikhathi eside noma yokuphela
- i-iritis engapheli (uveitis)
- i-corneal dystrophies
- i-phthisis bulbi (i-shrunken, iso elingasebenziyo kusuka ezifweni ezinzima noma ukuhlukunyezwa)
- i-arthritis yabantwana
Enye ingabuye ivezwe kwezinye izinto ezingaphandle zangaphandle ezingakwazi ukudala i-band keratopathy, ngokuhamba kwesikhathi. Ukuchayeka okungapheli emiphakathini ye-mercury kuye kwaziwa ngokubangela i-band keratopathy. Futhi, izidakamizwa ezinesisindo se-mercury zitholakala eminye imithi ye-ophthalmic.
Izimpawu
I-calcium deposits ingaba nkulu kakhulu. Ngezinye izikhathi, bangakwazi ukuphumula futhi babangele ubuhlungu nemikhakha ebusweni beso. Ezinye izimpawu ziyi:
- umbono obonakele noma wehlile
- inzwa enesihlabathi noma enobuso emehlweni
- ubomvu
- ukucasuka
Ukwelapha
Ukwelashwa kwe-band keratopathy kuqukethe ukwelashwa kwamakhemikhali okuthiwa i-chelation. I-Chelation iyinqubo yamakhemikhali esebenzisa i-EDTA (i-ethylenediamine-tetraacetic acid) ekhishwa ngamakhemikhali i-calcium e-cornea. Ngemuva kwe-chelation, ngokuvamile i-laser ye-excimer, efana neyetshenziselwa i-LASIK, isetshenziselwa ukususa noma iyiphi i-calcium esele futhi ibushelele phansi.
Ngemuva kwenkambiso, i- amniotic membrane noma i-bandage soft contact lens isetshenziselwa iso emavikini ambalwa. Ukuhlolwa kwegazi kungahle kudingeke kwenziwe ukuze kutholakale imbangela eqondile ye-band keratopathy noma kuzophinde kuqhubeke.