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1.56 Bifocal Blue Hlais HMC Optical lo ntsiab muag
Raws li lub npe qhia, daim iav bifocal muaj ob lub luminosity. Feem ntau, nws yog siv los saib qhov kev ncua deb, xws li tsav tsheb thiab taug kev; Cov hauv qab no yog pom qhov ze luminosity, pom qhov ze, xws li nyeem ntawv, ua si hauv xov tooj ntawm tes thiab lwm yam. Thaum lub lens bifocal nyuam qhuav tawm los, nws tau suav tias yog xov xwm zoo rau cov neeg uas muaj myopia + presbyopia, uas cuam tshuam nrog cov teeb meem ntawm kev xaiv thiab hnav.
Bifocal lens piece tshem tawm cov teeb meem ntawm myopia thiab presbycusis nquag tuaj tos thiab hnav, pom deb thiab ze pom tau meej, tus nqi kuj pheej yig dua.
