Muaj ob hom kev sib tiv tauj lub lens tsim. … Qhov nruab nrab ntawm lub lens muaj cov tshuaj tsis pom kev zoo li qub, thiab lub nplhaib nyob ib puag ncig muaj cov tshuaj tsis pom kev nyob ze. Qhov no yog hu ua concentric lossis simultaneous bifocal. Bifocal lo ntsiab muag tuaj nyob rau hauv ob qho tib si mos thiab rigid gas permeable (RGP) los yog tawv lens khoom.
Qhov twg yog qhov zoo dua bifocal lossis lub lens loj dua?
Nrog bifocals, koj tsis tau txais ib lub qhov muag pom kev zoo nrog lawv zoo li koj ua nrog cov lo ntsiab muag loj. Yog tias koj tsuas yog xav pom los ntawm ob daim ntawv tshuaj, tsis yog peb, bifocals yog qhov kev xaiv zoo heev.
Puas lawv ua bifocals lawm?
Yes, tsis muaj kab bifocals yog tiag. Peb hu lawv cov lo ntsiab muag, thiab lawv zoo heev rau kev kho cov tsos mob presbyopia. Txawm li cas los xij, raws li bifocals npog ob daim ntawv sau tshuaj, nws ua rau muaj kev nkag siab ntau dua los hu cov lo ntsiab muag tsis muaj kab ntau yam tsis yog bifocals vim tias lawv tuaj yeem lis peb cov tshuaj.
Dab tsi yog qhov txawv ntawm cov iav multifocal thiab bifocal?
Qhov txawv ntawm Bifocal thiab Multifocal Contact Lens
Bifocal lo ntsiab muag muaj ob daim ntawv tshuaj nyob rau hauv tib lub lens. Multifocal lo ntsiab muag zoo ib yam li cov tsom iav loj uas muaj ob peb lub ntsiab lus focal nyob rau hauv txhua lub lens rau kev ncua deb, nruab nrab thiab nyeem ntawv kho.
tsom iav bifocal ua dab tsi?
Bifocals yog tsom iav nrog sab sauv thiab qis ib nrab, sab sauv raunrug, thiab qis rau kev nyeem. Bifocals feem ntau yog muab rau cov neeg uas muaj presbyopia, ib qho mob uas Franklin raug kev txom nyem.
