Ukugqoka, noma ukungathinti amalensi nge- astigmatism - indaba yomuntu wonke umuntu. Kuze kube yamuva, iziguli ezinokuhlushwa okunjalo azizange zithole ithuba lokubona okungcono ngaphandle kokusetshenziswa kwezibuko. Okokuqala kwakukhona ama-lens aqinile ongayilungisa i-astigmatism, futhi eminyakeni embalwa eyedlule, abakhiqizi bafunde ukwenza amalensi a-torsi athambile. Kancane kancane, uhlu lwezinzuzo zokulungiswa kwe-astigmatism ngama-lens oxhumana naye luyanda, uhlu lwamaphutha - lufinyeziwe. Noma kunjalo, namanje kuningi kakhulu.
Izici zokukhetha amalensi okuthinta ama-astigmatism
Kunezinhlelo ezintathu eziyisisekelo zokugqoka ama-lens okuxhumana nawo njenge-astigmatism:
- Amalensi okuxhumana aphansi ukuze alungise ubuciko obubukwayo ngokuhlanganiswa nezibuko, ama-lens akhe anezibani zokulungisa i-astigmatism. Lokhu kunciphisa umthwalo emehlweni futhi ingozi yezinkinga.
- Ama-lens amancane asesimweni esifanele, esilungisa kokubili i-astigmatism ne- myopia .
- I-toric noma i-lens eyindilinga eyenza i-acuity ibonakale futhi ibheke njenge-astigmatism.
Indlela yokuqala iyona ephephile kakhulu futhi ikhululekile amehlo. Njengoba i-astigmatism ishintshe ekugxilweni kweso, akuyona into engathandeki ukugqoka njalo amalensi nezibuko eziqeda lokhu kuntuleka. Lokhu kugcwele ikhanda nokuhlukumeza kwe-lens. Ngenxa yale ndlela, siyaqhubeka sibona kahle amalensi, ngisho nalapho sinikeza iso ithuba lokuphumula, sithatha izibuko ze-astigmatism zokulungisa. Ngeshwa, le ndlela ayithandwa kakhulu.
Amalensi okuxhumana aphansi ne-astigmatism ayakuhle ngoba angaphazamisi izinqubo ze-metabolic emehlweni futhi anikeze umbono obanzi womabili amehlo. Ngenxa yokuthi ayiyona eyisiyingi kodwa i-toric, kufanele kuthathwe ukunakekelwa ukuqinisekisa ukuthi i-lens igcina isikhundla esimisiwe kwi-cornea futhi ayihambisani. Ngokuvamile, imithetho yokugqoka lezi lens ifana ne-conventional lens contact lens.
Amalensi okuxhumana okuqinile kufanele asuswe ebusuku. Banekhono elikhulu lokuthonya i-astigmatism, kodwa amehlo azodinga ukuphumula okwengeziwe.
Indlela yokukhetha amalensi oxhumana nabo afaneleko njenge-astigmatism, kuncike ezintweni eziningi, kodwa okuyisisekelo kulokhu kuyinduduzo yomuntu siqu. Ngisho nokuphumelela kakhulu kusukela ekubukeni kwe-optical, amalensi angalimaza uma ezwa ngokucacile kakhulu iso.
Izinzuzo kanye ne-Cons
Uma usakungabaza ukuthi ungakwazi yini ukugqoka ama-lens oxhumana nawo njenge-astigmatism, unake uhlu lwamanothi walendlela:
- ithuba eliphakeme lokuthuthukiswa kwezinqubo zokuvuvukala ngenxa yefomu engeyona ejwayelekile ye-lens;
- ukwanda kwe-myopia ngenxa yokuwohloka kokugeleza kwe-oxygen kuya kwe-cornea;
- amathuba okushintsha isimo se-cornea;
- shintsha isimo sezulu se-cornea, esiyinkimbinkimbi yokukhethwa kwamandla afanele we-lens.
Ngesikhathi esifanayo, izinzuzo zikhuluma ngokwazo:
- kungenzeka ukuthi ukulungisa ngisho ne-astigmatism ephezulu ye-corneal;
- ushintsho oluncane emkhakheni wombono;
- umbono omuhle we-binocular;
- ama-aberrations amancane nokuphambene.