Photochromic Bifocal Lens
Presbyopia
Thaum cov neeg muaj hnub nyoog 40 xyoo los yog li ntawd, peb ob lub qhov muag ua tsis tau yooj yim. Nws nyuaj rau peb hloov ntawm cov khoom nyob deb thiab cov khoom nyob ze, xws li ntawm kev tsav tsheb thiab kev nyeem ntawv. Thiab qhov teeb meem qhov muag no hu ua presbyopia.
Photochromic Bifocal Lens
Ib qho tsis pom kev lo ntsiab muag yog siv los ua kom pom tseeb rau koj cov duab nyob ze lossis nyob deb. Txawm li cas los xij, lawv tsis tuaj yeem siv los ua kom koj lub zeem muag rau ob leeg. Bifocal lo ntsiab muag txhim kho koj lub zeem muag rau ob qho tib si nyob ze thiab nyob deb.
Bifocal lo ntsiab muag muaj ob daim ntawv tshuaj. Ib feem me me hauv qab ntawm lub lens muaj lub zog los kho koj qhov ze ze. Tus so ntawm lub lens feem ntau yog rau koj qhov pom kev deb.
Lub photochromic bifocal lo ntsiab muag mus tsaus nti li looj tsom iav dub thaum koj mus sab nraum zoov. Lawv tiv thaiv koj ob lub qhov muag los ntawm lub teeb ci thiab UV rays, tso cai rau koj nyeem thiab saib kom meej nyob rau tib lub sijhawm. Cov tsom iav yuav pom tseeb dua hauv tsev hauv ob peb feeb xwb. Koj tuaj yeem yooj yim txaus siab rau kev ua si sab hauv tsev yam tsis tau tshem tawm.
Muaj Hom Photochromic Bifocal Lenses
Raws li koj tau paub tias bifocals muaj ob daim ntawv tshuaj nyob rau hauv ib daim ntawm lub lens, qhov ze ntawm cov tshuaj yog hu ua "Segment". Muaj peb hom bifocals raws li cov duab ntawm ntu.
Photochromic flat-top bifocal lens tseem hu ua photochromic D-seg lossis ncaj-saum. nws muaj qhov pom "kab" thiab nws qhov zoo tshaj plaws yog nws muaj ob lub zog sib txawv. Txoj kab yog qhov pom tseeb vim tias qhov hloov pauv ntawm lub hwj chim tam sim ntawd. Nrog rau qhov zoo dua, nws muab rau koj qhov kev nyeem ntawv dav tshaj plaws yam tsis tas yuav saib deb dhau ntawm lub lens.
Cov kab hauv photochromic puag ncig sab saum toj yog tsis pom tseeb li hauv photochromic tiaj tus sab saum toj. Thaum hnav, nws zoo li tsis tshua pom. Nws ua haujlwm zoo ib yam li photochromic tiaj tus sab saum toj, tab sis tus neeg mob yuav tsum saib kom deb ntawm lub lens kom tau txais qhov dav tib yam vim qhov zoo ntawm lub lens.
Photochromic blended yog ib puag ncig sab saum toj tsim uas cov kab tau ua kom pom tsawg dua los ntawm kev sib xyaw qhov sib txawv ntawm ob lub zog. Qhov kom zoo dua yog cov tshuaj pleev ib ce tab sis nws tsim qee qhov pom kev cuam tshuam.
