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1.71 Magalasi a Blue Cut Spin Photochromic Gray HMC Optical
Ubwino wa gawo lapansi umatsimikizira kulimba kwa lens ndi kudalirika kwa zokutira.Gawo labwino la gawo lapansi lomveka bwino komanso lowala, logwiritsa ntchito nthawi yayitali komanso losavuta kukhala lachikasu;Ndipo magalasi ena sagwiritsa ntchito kwa nthawi yayitali pachikasu, kapena kuphimba.Ma lens abwino opanda zokanda, zokanda, pamwamba patsitsi, pitting, lens oblique kuti akwaniritse kuwunika, kutsirizitsa kwake ndikwambiri.Palibe malo, mwala, mikwingwirima, kuwira, kusweka mkati mwa mandala, ndipo kuwala kumakhala kowala.
Kukwera kwa refractive index, lens imachepa, ndipo mtengo wake ndi wapamwamba.
