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Iilensi ze-1.59 ze-PC Bifocal Invisible Photochromic Gray HMC Optical
Okwangoku, kukho iintlobo ezimbini zezinto zelensi ezithengiswayo, enye zizinto zeglasi, enye zizinto zeresin. Izinto zeresin zahlulwe zibe yi-CR-39 kunye ne-polycarbonate (izinto zePC).
Iilensi zeBifocal okanye iilensi zeBifocal ziilensi eziqulathe iindawo ezimbini zokulungisa ngaxeshanye kwaye zisetyenziselwa kakhulu ukulungisa i-presbyopia. Indawo ekude elungiswa yilensi yeBifocal ibizwa ngokuba yindawo ekude, kwaye indawo ekufutshane ibizwa ngokuba yindawo ekufutshane kunye nendawo yokufunda. Ngokwesiqhelo, indawo ekude inkulu, ngoko ke ikwabizwa ngokuba yifilimu ephambili, kwaye indawo ekufutshane incinci, ngoko ke ibizwa ngokuba yi-sub-film.
