Njengoko sonke siyazi, iqondo le-myopia liphantsi, kwaye uluhlu olusuka kwiilensi ukuya kwiifreyimu lubanzi kunolo lwe-myopia ephezulu.Ke kubantu abane-myopia ephezulu, luhlobo luni lweglasi olufanele lube lufanelekile kubo?Namhlanje landela isantya somhleli, masinyuke kunye.
1.Yintoni abantu abayifunayo kakhulu?
Eyona nto ingalunganga kakhulu ye-myopia ephezulu kukuba amandla aphezulu, kokukhona i-lens ijiyile.Ngoko ke, wonke umntu ufuna i-lens ibe yincinci kwaye incinci xa idibanisa i-lens yamandla aphezulu.
Nangona kunjalo, nayiphi na idigri ine-thickness, kwaye i-index eyongeziweyo ye-refractive inciphisa ubukhulu obusekelwe kubukhulu be-lens ngokwayo.Nokuba i-1.74 lens, kufuneka ibe ngqindilili kunedigri esezantsi.
2.Indlela yokukhetha iiglasi kwi-myopia ephezulu?
Ndiyakholwa ukuba wonke umntu uyazi ukuba umbindi welensi ungqindilili kwaye amacala abhityile.Ke ukuba ufuna ilensi ebhityileyo, ungakhetha 1.74 lens.Oku ngokuqinisekileyo akuyongxaki.Yintoni enye onokuyenza ukuze ufumane iziphumo ezingcono?Umhleli ushwankathele iindlela ezininzi zomntu wonke, kwaye abahlobo banokuzama xa behlanganisa iiglasi.
(a) Ukuba ukhetha isakhelo se-acetate, ubukhulu besakhelo esinokubhloka buya kuba buninzi kwaye bubonakale buncinci, kwaye isakhelo se-acetate asiyi kucinezela ibhuloho yempumlo yakho ngenxa yokuba iiglasi zinzima kakhulu.
(b) Ukukhetha isakhelo esincinci kuya kunceda ukuba iiglasi zibukeke zincinci, kuba iilensi zincinci embindini kwaye zingqindilili ngeenxa zonke emacaleni, ngoko ke ukukhetha isakhelo esincinci kuya kwenza iiglasi zibonakale zincinci.
(c) Ngexesha lokucubungula, inkosi iya kwenza i-edge encinci yokusika ukunciphisa ubukhulu be-lens.Ukuba le angle inqunyulwe kakhulu, isangqa esimhlophe sinokunyuka, kwaye umphumo wokunciphisa awuyi kufezekiswa ukuba ukusika kuncinci.Inokugqitywa ngokokhetho lomntu, kwaye kunokwenzeka ukuxelela iprosesa.
Ixesha lokuposa: Jul-22-2021