1.59 PC Polycarbonate progressive Lens
Vim li cas Polycarbonate Lenses?
Polycarbonate yog cov khoom siv tiv thaiv zoo heev. Nws tau tsim nyob rau xyoo 1970s rau kev siv aerospace nrog rau cov neeg caij nkoj lub kaus mom hlau visors thiab spacecraft windshields, yog li tsis muaj dab tsi ntxiv, qhov ntawd yog qhov zoo nkauj heev ...
Los ntawm xyoo 1980s polycarbonate tau raug siv rau lo ntsiab muag vim nws yog nyias, sib dua thiab cuam tshuam ntau dua li iav. Niaj hnub no nws yog tus qauv rau tsom iav kev nyab xeeb, cov menyuam yaus tsom iav thiab tsom iav ncaws pob, vim nws muaj kev cuam tshuam zoo heev.
Polycarbonate yog ib qho thermoplastic uas pib lub lens ua cov txheej txheem ua pellets uas zoo li tus txheej txheem hu ua txhaj tshuaj molding. Thaum lub sij hawm tus txheej txheem no cov pellets yog compressed nyob rau hauv siab heev mus rau hauv lub lens pwm, ces txias los ua ib tug tawv yas lo ntsiab muag.
Raws li nws cov tawv tawv, polycarbonate lo ntsiab muag ib txwm thaiv 100% ntawm lub hnub UV rays yam tsis tas yuav muaj txheej txheej, txhais tau tias koj ob lub qhov muag raug tiv thaiv zoo. Cov lo ntsiab muag no kuj muaj nyob rau hauv ntau txoj kev xaiv (xws li cov lo ntsiab muag loj) dua li lwm cov khoom siv lo ntsiab muag siab.
Whilst polycarbonate undoubtedly ua ib tug tiag tiag cuam tshuam lens, nws yog durability los ntawm tus nqi. Polycarbonate muaj ntau qhov kev xav ntawm lub lens ntau dua li cov yas lossis iav, uas txhais tau hais tias yuav tsum muaj cov txheej txheem tiv thaiv kev cuam tshuam. Ntxiv rau qhov no polycarbonate muaj tus nqi Abbe tsuas yog 30, lub ntsiab lus nws muaj qhov tsis zoo kho qhov muag zoo rau cov kev xaiv yav dhau los.
Lenses Rau Presbyopia - Progressive
Yog tias koj muaj hnub nyoog tshaj 40 xyoo thiab muaj teeb meem nrog koj lub zeem muag ze thiab ntawm caj npab ncav cuag, yuav muaj feem cuam tshuam koj tau ntsib presbyopia. Progressive lo ntsiab muag yog peb cov tshuaj zoo tshaj plaws rau presbyopia, muab koj lub zeem muag ntse ntawm txhua qhov deb.
Cov txiaj ntsig ntawm Progressive Lenses yog dab tsi?
Zoo li bifocal lo ntsiab muag, cov lo ntsiab muag ua tau zoo multifocal tso cai rau tus neeg siv kom pom meej ntawm qhov sib txawv ntawm qhov sib txawv ntawm ib lub lens. Lub lens nce qib maj mam hloov lub zog los ntawm sab saum toj ntawm lub lens mus rau hauv qab, muab kev hloov pauv ntawm qhov pom kev deb mus rau qhov nruab nrab / lub computer tsis pom kev mus rau ze / nyeem ntawv pom.
Tsis zoo li bifocals, cov lo ntsiab muag ua tau zoo heev tsis muaj cov kab sib txawv lossis ntu thiab muaj qhov zoo ntawm kev muab qhov pom tseeb ntawm ntau qhov kev ncua deb, tsis txwv koj mus rau ob lossis peb qhov kev ncua deb. Qhov no ua rau lawv muaj kev xaiv nrov rau ntau tus neeg.
Yuav Qhia Li Cas Yog Cov Lens Progressive Zoo rau koj?
Txawm hais tias lub lens nce qib tso cai rau koj pom qhov ze thiab deb kom meej meej, cov lo ntsiab muag no tsis yog qhov kev xaiv zoo rau txhua tus.
Qee tus neeg yeej tsis hloov kho rau kev hnav lub lens loj. Yog tias qhov no tshwm sim rau koj, koj tuaj yeem ntsib kev kiv taub hau tas li, teeb meem nrog kev nkag siab tob, thiab kev sib txawv ntawm qhov chaw.
Tib txoj hauv kev kom paub yog tias cov lo ntsiab muag loj yuav ua haujlwm rau koj yog sim lawv thiab saib seb koj lub qhov muag kho li cas. Yog tias koj tsis hloov kho tom qab ob lub lis piam, koj tus kws kho qhov muag yuav xav tau kho lub zog ntawm koj lub lens. Yog tias muaj teeb meem txuas ntxiv mus, lub lens bifocal tej zaum yuav zoo dua rau koj.
