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1.56 Semi Finished Bifocal Photo grey Optical lens
Nthawi zambiri, magalasi osintha mitundu a myopia sangangobweretsa kusangalatsa komanso kukongola komanso amatha kukana ultraviolet ndi kunyezimira, amatha kuteteza maso, chifukwa cha kusintha kwamtundu ndikuti magalasi akapangidwa, amasakanikirana ndi zinthu zopepuka. , monga silver chloride, silver halide (yomwe imadziwika kuti silver halide), ndi kachulukidwe kakang'ono ka copper oxide catalyst. Nthawi zonse siliva halide iunikiridwa ndi kuwala kolimba, kuwalako kumawola ndikukhala tinthu tambiri tasiliva takuda togawanika mofanana mu mandala. Chifukwa chake, lens idzawoneka yocheperako ndikuletsa kutuluka kwa kuwala. Panthawiyi, disolo lidzakhala lakuda, lomwe lingathe kuteteza kuwala kukwaniritsa cholinga choteteza maso.
