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1.56 I-Semi Finished Single Vision Blue Cut Optical Lens
Ngokuvamile, kunezinhlobo eziyisithupha ze-refractive index of resin lens: 1.50, 1.56, 1.60, 1.67, 1.71 kanye 1.74. Uma ufuna inkomba ephakeme ye-refractive, ungacabangela kuphela amalensi engilazi, ano-1.80 no-1.90 ongakhetha kuwo. Ukuthi nje amalensi engilazi asetshenziswa kancane kulezi zinsuku, nakuba amashidi engilazi nawo anezinkomba eziphansi zokugqamisa, ezifana no-1.60 no-1.71.
