I-Astigmatism iyisici sombono esenza umuntu alahlekelwe ikhono lokubona izinto ezizungezile ngokucacile. I-Astigmatism yenzeka ngenxa yokwephulwa kokuma kwe-refractive surface yeso. Ngenxa yokuma okungavamile kwelensi noma i-cornea, ukugxila kwemisebe yokukhanya kuyaphazamiseka. Ngenxa yalokho, isithombe esitholwe iso lethu sihlanekezelwe - ingxenye yesithombe iphenduka i-lurry.
I-Astigmatism ivela ngamazinga ahlukahlukene kubantu abaningi.
Izimbangela ze-astigmatism ziyi:
- ukuzalwa;
- ezuziwe.
I-Congenital astigmatism ivela ezinganeni eziningi futhi kwezinye izimo ihamba ngokuhamba kwesikhathi. Ngokuvamile, i-astigmatism yenzeka ngenxa yezakhi zofuzo noma izinkinga ngesikhathi sokukhulelwa.
I-astigmatism ezuziwe ingenzeka ngenxa yokulimala ngokomzimba esweni, izifo ezivuthayo (njenge-keratitis noma i-keratoconjunctivitis) noma i-corneal dystrophy.
Uphawu oluyinhloko lwe-astigmatism ukufiphala kwezinto ezizungezile, kungakhathaliseki ukuthi zikude kangakanani kuzo. Ezinye izimpawu zihlanganisa:
- ukuwohloka okujwayelekile kombono;
- ukukhathala kwemisipha yamehlo;
- ubuhlungu, ukuhlaba emehlweni;
- ukungakwazi ukugxila entweni;
- ubuhlungu bekhanda ngenxa yokucindezeleka okubukwayo.
Indlela yokubhekana ne-astigmatism?
I-Astigmatism yisifo esingalungiseka. Isikhathi eside, okuwukuphela kwendlela yokulwa nayo kwakuwukugqoka izibuko ezikhethekile noma amalensi okuxhumana. Basiza ukuthuthukisa ikhwalithi yesithombe, kodwa abakwazi ukumisa ukuthuthukiswa kwe-astigmatism.
Eminyakeni yamuva nje, iziguli zingalungisa i-astigmatism ngokuhlinzwa:
- Ukulungiswa kwe-Laser - ukuqedwa kokukhubazeka kwe-corneal kusetshenziswa imishayo ye-laser.
- Ukushintshwa kwelensi - ukususwa kwelensi yakho kanye nokufakwa kwelensi yokwenziwa.
- Ukufakwa kwelensi ye-intraocular ngaphandle kokususwa kwelensi.
Ngaphambi kwanoma yikuphi ukuhlinzwa, kufanele uthintane ne-ophthalmologist. Ungathola ukubonisana emtholampilo Wesikhungo Sezokwelapha. Ungenza i-aphoyintimenti ngocingo noma ngengxoxo ye-inthanethi.