Ukuba unayo i- astigmatism , unokukwazi ukuhlinzwa kwe-LASIK . I-LASIK luhlobo lotyando olusetyenziselwa ukulungisa iimpazamo zokuzikhusela ezifana ne-astigmatism, myopia , kunye ne- hyperopia . Ukuba unayo i-astigmatism, umboniso wakho unokuthi uphazamise kumgama kunye nokufuphi. Unokuziva unxinekile emva kokufunda kwaye ufumene ukuba iileta kunye namazwi abonakala ehlwayelwe.
Abantu abaninzi abane-astigmatism baye bafumana ukuhlinzwa kweziliso ze-LASIK ukuba yindlela ekhuselekileyo nefanelekileyo yokulungiswa kombono.
Ngesizathu esithile, kukho "inhlamba" malunga ne-astigmatism xa kuziwa kwi-LASIK. Nangona kunjalo, ezininzi izigulane ezinjenge-astigmatism zinokuhlinzwa okwenziwe nge-laser refractive. Ininzi yale nto ibangelwa kukuba yinto yokuqala yohlobo lwengxaki ebonwe yi-FDA yeLASIK.
Yintoni i-Astigmatism?
I-Astigmatism idla ngokungaqondi. Abantu bane-astigmatism, hhayi i-astigmatism. Ingxaki yembono ngokuqhelekileyo ibangelwa yi-cornea, isakhiwo esicacileyo se-dome esifana naso kwinqanaba leyeso, enesimo esifana nebhola lebhola, kunokuba ibhola yebhola. Ngoko ke, kukho amandla angaphezulu okanye ngaphezulu kwekharya kwisinye se-meridiya, umzekelo kwi-degrees ezingama-90, kunokuba kukho kwi-meridian e-180 degrees. Nangona uninzi lwama-astigmatism ludla ngokugqithisa njenge-astigmatism, umntu unokufumana i-astigmatism yesiqhelo.
I-cornea ingaba ijikeleze okanye ijikeleze, kodwa i-lens ngaphakathi kwiso ilinamandla.
Indlela i-Astigmatism eyenziwa ngayo
I-Astigmatism iyalinganiswa kunye negrapial topographer. Umgca wegraphicalgraphy umshini owenza iiplagi zezibane kwi-cornea. Idatha ebonisa ukubuyela emuva ibonisa ukukhawuleka phezu kwe-cornea yonke esetyenzisiweyo ukubala isixa kunye nesiqondiso se-astigmatism.
Umlinganiselo wamandla okufuneka ulungele i-astigmatism ulinganiswa ngumbhobho, isixhobo esisetyenziswe xa ugqirha ebuza, "Ngubani na olungcono, omnye okanye ezimbini?" Oogqirha basebenzisa i-aberrometer yangaphambili yokubona ukuba i-astigmatism ithinta njani umgangatho wombono wakho.
Ezinye iindlela zokulungisa i-Astigmatism
Nangona abaninzi abantu abanesifo se-astigmatism banokuthi babe ne-LASIK, abanye abantu bane-astigmatism eninzi kakhulu ukuze i-laser ilungiswe. Nangona kunjalo, ngamanye amaxesha, abantu banokuba nenkqubo eyongezelelweyo ebizwa ngokuthi i-astigmatic keratectomy (AK) ukulungisa nayiphi i-astigmatism eseleyo. I-keratectomy ye-Astigmatic isebenzisa inqubo eyenziwa kakhulu kuma-1980 athiwa yi-RK, okanye i-radial keratectomy. Kwinkqubo ye-AK, ugqirha ogqithisileyo onokwazi ukwenza izinto ezincinci kwiindawo ezithile eziphambili kwi-cornea ukwenza i-cornea ibe yindidi. Ngamanye amaxesha kudibaniswa nomnye umbandela ongenamacandelo obizwa ngokuba yi-LRI, okanye isilumkiso sokuphumla. I-LRI yenziwe kwimida ephikisana ne-cornea ebangela ukuba i-flattentening in the direction.
Uvavanyo olusisiseko lombono wakho luya kufuneka ukuba unqume ukuba ungumviwa we-LASIK. Uhlobo kunye nobunzima be-astigmatism yakho kuya kunceda i- ophthalmologist yakho inqume ukuba uvavanyo lwe-LASIK luza kuba luncedo kuwe.
Abanye abantu abane-astigmatism akufanele babe ne-LASIK, njengoko iimpawu kunye neempawu zamehlo abo zibavimbela ekubeni nemiphumo ephumelelayo.
Umthombo:
Azar, Dimitri T. noDouglas D. Koch. "I-LASIK: Izinto ezisisiseko, iindlela zoPhando, kunye neengxaki." UMarcel Dekker, Inc. 2003.