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cov khoom

  • 1.59 Blue Cut PC Progressive Photochromic Grey HMC Optical lo ntsiab muag

    1.59 Blue Cut PC Progressive Photochromic Grey HMC Optical lo ntsiab muag

    Lub lens ua haujlwm yog hais txog cov tsom iav tshwj xeeb uas tuaj yeem coj cov yam ntxwv zoo rau lub qhov muag ntawm cov neeg tshwj xeeb hauv ib puag ncig thiab theem, thiab tuaj yeem hloov qhov kev xav pom thiab ua rau txoj kab pom kev zoo dua, meej thiab muag muag.

    Xim hloov lo ntsiab muag: nrhiav kev zam, haum rau myopia, hyperopia, astigmatism, thiab xav hnav looj tsom iav dub tib lub sijhawm. Hanchuang puv xim lo ntsiab muag hloov xim sai sai hauv tsev thiab sab nraum zoov, tiv thaiv UV thiab xiav lub teeb, tsuas yog tsis txias heev!

  • 1.56 Xiav hlais Progressive Photochromic Grey HMC Optical lo ntsiab muag

    1.56 Xiav hlais Progressive Photochromic Grey HMC Optical lo ntsiab muag

    Progressive multifocal tsom iav tau tsim muaj 61 xyoo dhau los. Multifocal tsom iav tau daws qhov teeb meem uas cov neeg laus hnub nyoog nruab nrab thiab cov neeg laus xav tau cov luminosity sib txawv kom pom cov khoom ntawm qhov sib txawv thiab yuav tsum tau hloov tsom iav ntau zaus. Ob lub tsom iav pom tau deb, zoo nkauj, kuj pom tau ze. Kev sib piv ntawm cov tsom iav multifocal yog ib txoj haujlwm ua haujlwm, uas yuav tsum tau siv tshuab ntau dua li qhov sib piv ntawm cov tsom iav monocal. Optometrists tsis tsuas yog yuav tsum nkag siab txog optometry, tab sis kuj yuav tsum nkag siab txog cov khoom, kev ua, kev hloov ntawm daim iav thav duab, ntsuas lub ntsej muag khoov, rau pem hauv ntej lub kaum sab xis, qhov muag nrug, qhov deb ntawm cov tub ntxhais kawm, qhov siab ntawm cov tub ntxhais kawm, xam qhov chaw hloov chaw, kev pab cuam tom qab muag, sib sib zog nqus. kev nkag siab ntawm ntau lub ntsiab lus tseem ceeb, qhov zoo thiab qhov tsis zoo, thiab lwm yam. Tsuas yog ib tus kws tshaj lij tuaj yeem ua tiav kev xav rau cov neeg siv khoom, txhawm rau txhawm rau ua kom haum rau ntau lub ntsej muag tsom iav.

  • 1.59 PC Xiav hlais Bifocal Invisible Photochromic Grey HMC Optical lo ntsiab muag

    1.59 PC Xiav hlais Bifocal Invisible Photochromic Grey HMC Optical lo ntsiab muag

    Raws li lub npe qhia, daim iav bifocal muaj ob lub luminosity. Feem ntau, nws yog siv los saib qhov kev ncua deb, xws li tsav tsheb thiab taug kev; Cov hauv qab no yog pom qhov ze luminosity, pom qhov ze, xws li nyeem ntawv, ua si hauv xov tooj ntawm tes thiab lwm yam. Thaum lub lens bifocal nyuam qhuav tawm los, nws tau raug suav tias yog Txoj Moo Zoo ntawm myopia + presbyopia, tshem tawm cov teeb meem ntawm kev xaiv thiab hnav, tab sis raws li tib neeg siv, nws pom tias qhov tsis txaus ntawm lub lens bifocal kuj muaj ntau.

  • 1.56 Blue Cut Bifocal Flat Top Photochromic Grey HMC Optical lo ntsiab muag

    1.56 Blue Cut Bifocal Flat Top Photochromic Grey HMC Optical lo ntsiab muag

    Cov iav hloov xim tuaj yeem hloov xim nrog lub teeb, xws li xim av lossis xim xim rau sab nraum zoov lub teeb muaj zog, thiab pob tshab hauv tsev, tuaj yeem ua lub luag haujlwm tiv thaiv lub qhov muag, tshwj xeeb tshaj yog nyob rau hauv kev tiv thaiv ntawm ultraviolet hluav taws xob thiab xiav lub teeb lim yog ntawm kev pab zoo.

    Rau cov neeg uas muaj myopia uas yuav tsum tau hnav looj tsom iav dub kom tawm mus, cov iav hloov xim tuaj yeem txuag lub nra ntawm kev hloov cov iav myopic thiab looj tsom iav dub, thiab tseem tuaj yeem daws qhov teeb meem uas qee tus poj niam tsis yooj yim nqa ntau lub iav tsis muaj hnab ris.

  • 1.59 pc Xiav Hlais Photochromic Grey HMC Optical lo ntsiab muag

    1.59 pc Xiav Hlais Photochromic Grey HMC Optical lo ntsiab muag

    Peb txhua tus paub tias lo ntsiab muag ua lub luag haujlwm txiav txim siab hauv cov tsom iav uas tsim nyog, yog li thaum xaiv lo ntsiab muag, peb yuav tsum xaiv raws li peb txoj haujlwm, lub neej xav tau thiab ib puag ncig ua haujlwm. Piv txwv li, cov tub ntxhais kawm, tsav tsheb, kws kho mob, thiab lwm yam, cov neeg zoo li no muaj qhov pom kev zoo rau cov xim thiab qhov deb.

    Yog li ntawd, thaum xaiv lo ntsiab muag, cov xim tsis muaj xim thiab pob tshab yuav tsum nyiam dua.

  • 1.74 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    1.74 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    Resin lo ntsiab muag yog lub lens tsim los ntawm cov tshuaj synthesis thiab polishing nrog cob ua raw khoom. Resin lens muaj qhov pom tseeb zoo, nws qhov hnyav yog lub teeb, hnav zoo dua; Qhov thib ob, lub lens resin muaj qhov cuam tshuam tsis zoo thiab tsis tawg yooj yim thiab muaj kev nyab xeeb dua; Tib lub sijhawm, lub lens resin kuj muaj lub teeb kis tau zoo; Tsis tas li ntawd, resin lo ntsiab muag yog ib qho yooj yim rau reprocessed kom tau raws li cov kev xav tau tshwj xeeb. Thaum kawg, ua ke nrog kev tsim kho tshiab thiab txhim kho cov txheej txheem txheej, cov lo ntsiab muag resin kuj muaj qhov hnav tsis zoo, yog li lawv tau dhau los ua lub ntsiab ntawm cov lo ntsiab muag hauv khw.

  • 1.71 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    1.71 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    Qhov zoo ntawm substrate txiav txim siab lub durability ntawm lub lens thiab kev ntseeg siab ntawm cov txheej. Cov substrate zoo meej thiab ci, siv sijhawm ntev thiab tsis yooj yim rau daj; Thiab qee qhov lo ntsiab muag tsis siv sijhawm ntev ntawm cov xim daj, lossis txawm tias txheej tawm. Lub lens zoo tsis muaj khawb, khawb, plaub hau nto, pitting, lens oblique kom tau raws li lub teeb pom kev, qhov tiav yog siab heev. Tsis muaj qhov chaw, pob zeb, kab txaij, npuas, tawg hauv lub lens, thiab lub teeb ci.

    Qhov siab dua qhov refractive index, qhov thinner lub lens, thiab tus nqi siab dua.

  • 1.67 Xiav hlais Spin Photochromic Grey HMC Optical lo ntsiab muag

    1.67 Xiav hlais Spin Photochromic Grey HMC Optical lo ntsiab muag

    lens zoo, cov khoom yog qhov tseem ceeb

    Cov khoom siv ntawm ob lub lo ntsiab muag ua lub luag haujlwm txiav txim siab hauv lawv qhov kev xa tawm, kev ua haujlwm ntev thiab tus lej Abbe (tus qauv zaj sawv ntawm qhov chaw ntawm lub lens). Nws tuaj yeem ua tiav kev tshawb fawb tob thiab txhim kho ntawm cov ntaub ntawv, nrog kev tswj tau zoo thiab kev ua haujlwm zoo heev.

    zaj duab xis txheej, ua rau lub lens yooj yim hnav

    Lub lens zaj duab xis zoo tuaj yeem muab lub lens ua tau zoo dua, tsis yog qhov kev ua haujlwm kho qhov muag xws li kev xa tawm tau zoo heev, nws qhov hardness, hnav tsis kam, durability yuav zoo heev.

  • 1.61 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    1.61 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag

    Resin yog hydrocarbon (hydrocarbon) exudate los ntawm cov nroj tsuag, tshwj xeeb tshaj yog conifers, muaj nuj nqis rau lwm yam tshuaj tshwj xeeb. Resin tuaj yeem muab faib ua ob hom ntuj cob thiab hluavtaws cob, thiab lub lens resin yog lub lens tsim los ntawm cov tshuaj synthesis thiab polishing nrog cob ua raw khoom. Resin lens muaj qhov pom tseeb zoo, nws qhov hnyav yog lub teeb, hnav zoo dua; Qhov thib ob, lub lens resin muaj qhov cuam tshuam tsis zoo thiab tsis tawg yooj yim thiab muaj kev nyab xeeb dua; Tib lub sijhawm, lub lens resin kuj muaj lub teeb kis tau zoo; Tsis tas li ntawd, resin lo ntsiab muag yog ib qho yooj yim rau reprocessed kom tau raws li cov kev xav tau tshwj xeeb. Thaum kawg, ua ke nrog kev tsim kho tshiab thiab txhim kho cov txheej txheem txheej, cov lo ntsiab muag resin kuj muaj qhov hnav tsis zoo, yog li lawv tau dhau los ua lub ntsiab ntawm cov lo ntsiab muag hauv khw.

  • 1.56 Blue Cut Photochromic Grey HMC Optical lo ntsiab muag

    1.56 Blue Cut Photochromic Grey HMC Optical lo ntsiab muag

    Lens yog cov khoom siv pob tshab nrog ib lossis ntau qhov nkhaus uas ua los ntawm cov khoom siv kho qhov muag xws li iav lossis resin. Tom qab polishing, nws yog feem ntau sib sau ua ke rau hauv iav nrog lub iav thav duab los kho tus neeg siv lub zeem muag thiab tau txais qhov pom tseeb ntawm qhov pom.

    Lub thickness ntawm lub lens feem ntau yog nyob ntawm qhov refractive index thiab degree ntawm lub lens. Myopic lo ntsiab muag yog nyias nyob rau hauv nruab nrab thiab tuab nyob ib ncig ntawm cov npoo, thaum lub lens hyperopic yog qhov opposite. Feem ntau qhov siab dua qhov ntsuas, qhov tuab ntawm lub lens; Qhov siab dua qhov refractive index, lub lens thinner