Los ntawm sab saum toj mus rau hauv qab, cov lo ntsiab muag trifocal raug rau qhov kev ncua deb, nruab nrab, thiab teeb pom kev ze ze. Trifocals feem ntau pom zoo rau cov neeg muaj hnub nyoog tshaj 40 xyoo uas muaj qhov tsis pom kev ua ntej thiab tab tom pib ntsib presbyopia. … Bifocals raug rau tsuas yog ob qhov kev pom ntawm lub lens
Kuv puas xav tau bifocals lossis trifocals?
Txawm koj xav tau bifocals lossis trifocals yuav nyob ntawm ntawm qhov hnyav ntawm koj qhov presbyopia. Mob ntshav qab zib thiab qee yam tshuaj tuaj yeem ua rau muaj kev pheej hmoo ntawm presbyopia thiab tseem tuaj yeem cuam tshuam seb bifocals lossis trifocals zoo dua li qhov koj xav tau.
Cov tsom iav trifocal puas tsim nyog?
Trifocal lens cov txiaj ntsig
Trifocal lo ntsiab muag tuaj yeem pab koj siv tag nrho peb hom kev pom yog li koj tuaj yeem ua tiav cov haujlwm txhua hnub yam tsis tas yuav hloov pauv ntawm cov iav sib txawv lossis hnav tiv nrog ntxiv rau ib leeg-kho lossis bifocal lo ntsiab muag.
Tsis muaj kab bifocals tib yam li trifocals?
Qee lub sij hawm hu ua "tsis muaj kab bifocals", cov lo ntsiab muag ua tau zoo muaj tib thaj chaw ntawm kev khotsis muaj cov kab pom pom ntawm bifocals lossis trifocals. Dua li ntawm qhov kev thov kom zoo nkauj, cov lo ntsiab muag ua tau zoo tso cai rau kev kho kom zoo dua qub rau cov neeg xav tau kev pab pom ob qho tib si nyob ze thiab deb.
Kuv puas yuav tau txais bifocals lossis tsis?
Bifocal lo ntsiab muag yog lo ntsiab muag nrog cov kab sib cais ob hom tshuaj sib txawv. Muaj ib daim ntawv tshuaj nyob rau sab saum toj thiab nyeem ntawv nyob rau hauv qab, uas yog qhov zoo rau kev saib cov khoom ze. … Yog tias koj tsuas yog xav pom los ntawm ob daim ntawv tshuaj, tsis yog peb, bifocals yog qhov kev xaiv zoo heev.