I-Astigmatism yinkinga yombono eyenza izinto zivele zihlanekezele futhi zifiphele. Ngokuvamile kuthinta kokubili ibanga futhi eduze nombono. Yona inkinga yombono ovame kakhulu futhi ingase ivele ngokusondela futhi ukubhekwa phambili .
Izimpawu Nezibonakaliso
I-Astigmatism ngokuvamile ibangela umbono ukuba uphazamise kude nakuseduze. Iziguli ezine-astigmatism zivame ukuzwa zikhathele emva kokufunda futhi zithole ukuthi izincwadi namagama kubonakala sengathi zihlwanyelwe.
Ukuhlunga nokwehlisa ikhanda kubonakala kuthuthukisa ukuphazamiseka kombono okubangelwa i-astigmatism.
Izimbangela
I-Astigmatism ibangelwa i- cornea ene-oblong shape, njengebhola, esikhundleni se-shape eyindilinga, njengobhasikidi.
I-cornea ene-astigmatism inezinhlangothi ezimbili, ijika elilodwa eliphansi kanye nelinye elikhulu. Ukukhanya kugxilwe amaphuzu amabili esikhundleni salinye. Iphuzu elilodwa lokugxila lingase libe phambi kwe-retina nelinye ngemuva.
Lokhu kubangela izithombe ukuthi zivele zihlanekezele ngaphezu kokubonakala okufiphala. I-Astigmatism nayo ingabangelwa i-lens encrystalline eyakheke ngokungavamile. Lesi simo sibizwa ngokuthi " astigmatism lenticular ."
Ukuxilongwa
I-Astigmatism ithola ukuthi i-keratometer yombhalo, ithuluzi elisetshenziselwa ukulinganisa ukuvinjelwa kwe-cornea. I-keratometer ivame ukusetshenziselwa ukuhlolwa kwelanga eliyisisekelo.
Ukuxilongwa nakho kungenziwa ngokusebenzisa i- corneal topographer. I-corneal topographer iyithuluzi elinikeza imephu elinebala, efana nebalazwe lezintaba.
Izindawo ezihamba phambili zikhonjiswe ezindaweni ezibomvu nezicathulo ezihlaza okwesibhakabhaka.
I- aberrometer yangaphambili ibuye ihlinzeke udokotela wezilwazi ulwazi oluthe xaxa mayelana ne-astigmatism.
Ukwelapha
I-Astigmatism ingalungiswa ngezibuko, uxhumane namalensi noma ukuhlinzwa.
- Iilazi: Iilazi zisebenza kahle neziguli ezine-astigmatism. Iziguli ezine-astigmatism ephakeme kufanele zibe nezibuko zabo ngokucophelela zilungiselelwe ubuso babo.
- Ama- lens othintana nabo: Amalensi okuthintana afana ne-astigmatism abizwa ngokuthi ama-lens okuxhumene nawo . Iziguli ezinama-astigmatism amaningi zinempumelelo enkulu ngegesi eliqinile elinama-lens othintana nabo.
- Ukuhlinzwa: Izinqubo zokulungisa izimboni zokuhlinzeka futhi inqubo yokukhokha, eyaziwa ngokuthi i-astigmatic keratotomy, ingabuye ilungise i-astigmatism ngempumelelo.
I-LASIK Surgery ne-Astigmatism
Uma une-astigmatism, ungacabangi ukuthi awukwazi ukuhlinzwa kwe-LASIK. Kungenzeka kakhulu kuningi.
Ukuhlinzwa kwe-LASIK kusetshenziselwa ukulungisa amaphutha okubhuka njenge-astigmatism, i- myopia , ne- hyperopia . Abantu abaningi abane-astigmatism bathole ukuhlinzwa kwe-LASIK kwindlela yokuphepha yokulungisa umbono.
Ngesizathu esithile, kukhona "inhlamba" mayelana ne-astigmatism uma kuziwa ku-LASIK. Kodwa-ke, iziguli eziningi ezine-astigmatism zingaba nokuhlinzwa kokulahla kwe-laser. Okuningi kwalokhu kuvela eqinisweni lokuthi kwakuyinkinga yokuqala yombono ovunywe yi-FDA ye-LASIK.
I-LASIK Surgery Plus I-Keratectomy E-Astigmatic
Ngenkathi abantu abaningi abane-astigmatism bengaba ne-LASIK, abanye abantu bane-astigmatism eningi kakhulu ukuze i-laser ilungise. Nokho, ngezinye izikhathi bangase babe nenqubo eyengeziwe ebizwa ngokuthi i-astigmatic keratectomy (AK) ukulungisa noma iyiphi i-astigmatism esele.