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cov khoom

  • 1.49 Ib Vision UC

    1.49 Ib Vision UC

    Lub refractive index ntawm lub lens, 1.49, 1.56, 1.60, 1.67, 1.71, 1.74 nyob rau sab sauv cim ntawm lub lens yog hais txog lub refractive index ntawm lub lens. Rau cov tsom iav myopic, qhov siab dua qhov ntsuas qhov ntsuas ntawm lub lens, qhov thinner ntawm ntug ntawm lub lens, ntawm qhov chaw uas lwm qhov tsis zoo ib yam.