I-Bifocal Lens
Ungasho Kanjani Uma Udinga I-Bifocals
I-Presbyopia yisimo esihlobene neminyaka esiholela ekufipheleni eduze nokubona.Ivame ukuvela kancane kancane;uzozabalaza ukubona incwadi noma iphephandaba eduze futhi uzolisusa ngokwemvelo kude nobuso bakho ukuze libonakale ngokucacile.
Lapho sebeneminyaka engu-40, ilensi ecwebezelayo engaphakathi kweso ilahlekelwa ukuguquguquka kwayo.Lapho isencane, le lensi ithambile futhi iyagobeka, ishintsha kalula umumo ukuze ikwazi ukugxilisa ukukhanya ku-retina.Ngemva kweminyaka engu-40, i-lens iba lukhuni, futhi ayikwazi ukushintsha isimo kalula.Lokhu kwenza kube nzima ukufunda noma ukwenza eminye imisebenzi eseduze.
Ama-Bifocal Lens
Amalensi e-bifocal eyeglass aqukethe amandla amabili amalensi ukukusiza ukuthi ubone izinto kuwo wonke amabanga ngemva kokulahlekelwa amandla okushintsha ngokwemvelo ukugxila kwamehlo akho ngenxa yobudala, eyaziwa nangokuthi i-presbyopia.Ngenxa yalo msebenzi othize, amalensi e-bifocal ngokuvamile anikezwa abantu abangaphezu kweminyaka engama-40 ukusiza ukunxephezela ukonakala okungokwemvelo kombono ngenxa yenqubo yokuguga.
Imiklamo Emithathu Yamalensi E-Bifocal
Kungakhathaliseki ukuthi kungani udinga incwadi kadokotela yokulungiswa kombono oseduze, ama-bifocals wonke asebenza ngendlela efanayo.Ingxenye encane engxenyeni engezansi yelensi iqukethe amandla adingekayo ukuze ulungise umbono wakho oseduze.Ilensi esele ngokuvamile ingeyokubona kwakho kude.Ingxenye yelensi enikelwe ekulungiseni eduze kombono ingaba yizimo ezintathu:
Umumo 1
I-Flat Top ithathwa njengenye yamalensi e-multifocal alula ukuzivumelanisa nayo, yingakho iyi-bifocal evame ukusetshenziswa kakhulu (i-FT 28mm kubhekiselwa kuyo njengosayizi ojwayelekile).Lesi sitayela selensi singesinye sezitholakala kalula cishe kunoma iyiphi i-medium futhi ehlanganisa namalensi enduduzo.I-Flat Top isebenzisa ububanzi obuphelele besegimenti enikeza umsebenzisi ukufunda okuqondile kanye noshintsho lwebanga.
Umumo 2
Njengoba igama liphakamisa ukuthi i-bifocal eyindilinga iyindilinga ngezansi.Ekuqaleni zaziklanyelwe ukusiza abagqokile ukuthi bafinyelele indawo yokufunda kalula.Nokho, lokhu kunciphisa ububanzi bokubona eduze okutholakala phezulu kwesegimenti.Ngenxa yalokhu, ama-bifocal ayindilinga awadumile kakhulu kune-flat-top bifocals.Ingxenye yokufunda itholakala kakhulu ngo-28mm.
Umumo 3: Kuhlanganisiwe
Ububanzi bengxenye ye-Blended bifocal ngu-28mm.Lo mklamo welensici-osmetically ilensi ebukeka kahle kakhulu yawo wonke ama-bifocals, ayibonisi nhlobo uphawu lwesegimenti.Kodwa-ke, kunobubanzi obuyi-1 kuye ku-2mm bokuhlanganisa phakathi kwamandla engxenye kanye nencwadi kadokotela yelensi.Lobu bubanzi bokuxutshwa bunombono osontekile ongabonakala ungavumelani nezimo kwezinye iziguli.Kodwa-ke, futhi iyilensi esetshenziswa neziguli ezingaguquki kumalensi aqhubekayo.
