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1.59 PC Bifocal Invisible Photochromic Gray HMC lens Optical
Njengamanje, kunezinhlobo ezimbili zezinto ze-lens emakethe, enye i-glass material, enye i-resin material.Izinto ze-resin zihlukaniswe zibe yi-CR-39 ne-polycarbonate (i-PC impahla).
Amalensi e-Bifocal noma amalensi e-bifocal amalensi aqukethe izindawo ezimbili zokulungisa ngesikhathi esisodwa futhi asetshenziselwa kakhulu ukulungisa i-presbyopia.Indawo ekude elungiswe yi-bifocal lens ibizwa ngokuthi indawo ekude, futhi indawo eseduze ibizwa ngokuthi indawo eseduze nendawo yokufunda.Ngokuvamile, isifunda esikude sikhulu, ngakho-ke sibizwa nangokuthi ifilimu eyinhloko, futhi isifunda esiseduze sincane, ngakho sibizwa ngokuthi i-sub-film.
