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1.56 Semi Finished Single Vision Blue Cut Optical Lens
Nthawi zambiri, pali mitundu isanu ndi umodzi ya refractive index ya utomoni magalasi: 1.50, 1.56, 1.60, 1.67, 1.71 ndi 1.74. Ngati mukufuna refractive index yapamwamba, mutha kungoganizira magalasi agalasi, omwe ali ndi 1.80 ndi 1.90 oti musankhe. Kungoti magalasi agalasi sagwiritsidwa ntchito nthawi zambiri masiku ano, ngakhale mapepala agalasi alinso ndi zizindikiro zotsika, monga 1.60 ndi 1.71.
