● Lub ntiaj teb kev ua yeeb yaj kiab xim hloov tshuab thev naus laus zis, kev hloov xim (fading) yog qhov sib xws, nrawm dua, thiab cov xim hloov tau zoo heev
● Lub lens saum npoo yog yooj yim los ntxuav, tiv taus cov av thiab hnav
● Ntxiv los tiv thaiv lub teeb xiav ua haujlwm zoo los thaiv lub teeb xiav puas tsuaj los ntawm cov xov tooj ntawm tes thiab khoos phis tawj, thiab tiv thaiv ob lub qhov muag hauv txhua qhov kev qhia rau 24 teev
● Lub discoloration ntawm txheej zaj duab xis yog zoo heev
Imported high-zoo thawj raw cov ntaub ntawv raug xaiv kom tusyees faib cov xim hloov nyob rau hauv lub lens khoom.Nyob rau hauv tshav ntuj, cov xim hloov pauv tau ua tiav, thiab cov xim tsis sib xws yog khaws cia thaum lub sijhawm ua haujlwm ntawm lub lens, sib xws thiab tag nrho, kom ntseeg tau qhov tseeb ntawm cov xim;
Kev hloov xim (fading) nrawm nrawm, xim hloov yog sib sib zog nqus, thiab nws tiv thaiv lub qhov muag los ntawm ultraviolet rays.
Ib lub lens rau ntau lub hom phiaj, tsis muaj xim tsis sib xws, lub lens paub qhov kev siv thiab tawg ntawm ultraviolet rays, siab transmittance, dav thiab pom tseeb, thiab tuaj yeem siv sab hauv tsev thiab sab nraum zoov.
● Hmo ntuj pob tshab hauv tsev
● Discoloration ntawm sab nraum zoov ultraviolet hluav taws xob
● Ua tob, thim rov qab sai, kev tiv thaiv qhov muag
● Pure xim hloov, hloov ceev thiab ceev fading
● Lub ntiaj teb kev ua yeeb yaj kiab xim hloov tshuab thev naus laus zis, kev hloov xim (fading) yog qhov sib xws, nrawm dua, thiab cov xim hloov tau zoo heev
● Lub lens saum npoo yog yooj yim los ntxuav, tiv taus cov av thiab hnav
● Ntxiv los tiv thaiv lub teeb xiav ua haujlwm zoo los thaiv lub teeb xiav puas ntawm lub xov tooj ntawm tes thiab khoos phis tawj, thiab tiv thaiv koj ob lub qhov muag 24 teev
● Lub discoloration ntawm txheej zaj duab xis yog zoo heev