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cov khoom

  • 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