PC lens, inozivikanwawo se "space film", nekuda kwekunaka kwayo kupikisa, ine zvakare inowanzozivikanwa segirazi-isingabvumirwe girazi.Polycarbonate lenses inoshingirira zvakanyanya kukanganiswa, haiputsi.Iwo ane simba rakapetwa kagumi pane girazi kana purasitiki yakajairwa, zvichiita kuti ive yakanakira vana, malenzi ekuchengetedza, uye chiitiko chekunze.
Progressive lenses, dzimwe nguva inonzi "no-line bifocals," inobvisa mitsetse inooneka yetsika bifocals uye trifocals uye kuvanza chokwadi chekuti unoda kuverenga magirazi.
Tags:bifocal lens, progressive lens, 1.56 pc lens