1.59 PC Polycarbonate Bifocal Lens
Ayini ama-Polycarbonate Lens?
Amalensi e-Polycarbonate ahlukaniswa ngezinto zawo ezikwazi ukuqina, ezingashayi, kanye nezakhelwe ngaphakathi ezimelana nokuklwebheka.Ukumelana nomthelela kuwenza ahluke kwamanye amalensi engilazi yamehlo.Lokhu kubenza babe yinketho efanelekile kubantu abanempilo esebenzayo abajwayele ukuwisa noma ukunwaya izibuko zabo.Amalensi e-Polycarbonate nawo alungele izingubo zamehlo zezingane kanye nezibuko zokuphepha ezinikezwe udokotela.
Alula futhi azacile kunepulasitiki evamile noma amalensi engilazi, amalensi e-polycarbonate angase agqokeke kalula futhi angadeli ikhwalithi.Awengezi ukujiya ekuboneni kahle, anciphisa ukuhlanekezela, futhi avimbe amaphesenti angu-100 emisebe yelanga eyingozi ye-ultraviolet (Ukukhanya kwe-UV).
Izingilazi ezinamalensi e-polycarbonate zaqala ukwakhiwa ngeminyaka yawo-1980, futhi bezilokhu ziba ngcono kusukela ngaleso sikhathi.Wonke ama-coating ajwayelekile, afana ne-anti-reflective coating, engazweli, namathanta angasetshenziswa kulawa 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 iyindilingaphansi.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-ama-bifocals aphansi.Ingxenye yokufunda ivame ukutholakala 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.
