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1.56 Bifocal Xiav Txiav HMC Optical lenses
Raws li lub npe qhia, daim iav bifocal muaj ob lub teeb ci. Feem ntau, nws yog siv los pom qhov deb, xws li tsav tsheb thiab taug kev; Cov hauv qab no yog los pom qhov ze ci, kom pom qhov ze, xws li nyeem ntawv, ua si xov tooj ntawm tes thiab lwm yam. Thaum lub lens bifocal nyuam qhuav tawm los, nws tau suav hais tias yog xov xwm zoo rau cov neeg uas muaj myopia + presbyopia, uas tshem tawm qhov teeb meem ntawm kev khaws thiab hnav ntau zaus.
Daim iav bifocal tshem tawm qhov teeb meem ntawm myopia thiab presbycusis nquag xaiv thiab hnav, pom deb thiab ze tuaj yeem pom tseeb, tus nqi kuj pheej yig dua.
