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1.56 Duab Xim HMC Optical lenses
Cov tsom iav photochromic, tseem hu ua "cov tsom iav photosensitive". Raws li lub hauv paus ntsiab lus ntawm kev sib hloov xim thiab lub teeb, lub tsom iav tuaj yeem tsaus sai sai hauv qab lub teeb thiab ultraviolet rays, thaiv lub teeb muaj zog thiab nqus cov teeb ultraviolet, thiab nqus lub teeb pom kev tsis muaj zog; thaum nws rov qab mus rau qhov chaw tsaus ntuj, nws tuaj yeem rov qab kho qhov tsis muaj xim thiab pob tshab sai sai, ua kom lub tsom iav transmittance. Yog li ntawd, cov tsom iav photochromic yog tsim rau siv sab hauv tsev thiab sab nraum zoov kom tiv thaiv kev puas tsuaj rau lub qhov muag los ntawm tshav ntuj, lub teeb ultraviolet thiab lub teeb ci ntsa iab.
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1.56 FSV Duab Grey HMC Optical lenses
Cov tsom iav photochromic tsis yog tsuas yog kho qhov muag kom pom kev zoo xwb, tab sis kuj tiv taus feem ntau ntawm kev puas tsuaj rau lub qhov muag los ntawm cov teeb meem UV. Ntau yam kab mob ntawm qhov muag, xws li kev laus zuj zus ntawm macular degeneration, pterygium, senile cataract thiab lwm yam kab mob ntawm qhov muag yog cuam tshuam ncaj qha rau cov teeb meem ultraviolet, yog li cov tsom iav photochromic tuaj yeem tiv thaiv lub qhov muag rau qee yam.
Cov iav tsom iav photochromic tuaj yeem kho qhov kev xa tawm ntawm lub teeb los ntawm kev hloov pauv ntawm lub lens, yog li ntawd lub qhov muag tib neeg tuaj yeem hloov kho rau qhov kev hloov pauv ntawm lub teeb ib puag ncig, txo qhov kev qaug zog ntawm qhov muag thiab tiv thaiv lub qhov muag.
