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1.59 PC Bifocal Invisible Photochromic Gray HMC Optical lenzi
Parizvino, pane marudzi maviri ezvigadzirwa zvemalensi pamusika, imwe igirazi zvinhu, imwe yacho ine resin zvinhu. Resin zvinhu zvakakamurwa kuita CR-39 uye polycarbonate (PC zvinhu).
Bifocal lenzis kana bifocal lenzis malenzi ane nzvimbo mbiri dzekugadzirisa panguva imwe chete uye anonyanya kushandiswa kugadzirisa presbyopia. Nzvimbo iri kure yakagadziriswa nebifocal lens inonzi nzvimbo iri kure, uye nzvimbo yepedyo inonzi nzvimbo yepedyo uye nzvimbo yekuverenga. Kazhinji, iyo distal nharaunda yakakura, saka inonziwo iyo huru firimu, uye iyo proximal dunhu idiki, saka inonzi iyo sub-firimu.
