Ua ntej, qhov kev nce qib multifocal lens yog dab tsi?
Ntau tshaj 1, maj mam ua kom pom tseeb lub lens nyob rau tib lub lens tsuas yog deb ntawm lub teeb thiab ze li khiav tawm, los ntawm txoj kev dioptre ntawm kev hloov maj mam, los ntawm maj mam ze rau siv cov ntawv nyeem remotely khiav tawm thiab yuav luag tag nrho cov organic ua ke, yog li ntawm lens nyob rau tib lub sij hawm muaj saib nyob deb, nruab nrab nrug thiab kaw qhov yuav tsum tau sib txawv luminosity.
Progressive lo ntsiab muag muaj peb qhov chaw ua haujlwm
Thawj qhov chaw ua haujlwm yog thaj chaw deb nyob rau saum lub lens.Distance zone yog tus naj npawb ntawm cov degrees xav pom nyob deb, siv los pom cov khoom nyob deb.
Qhov chaw ua haujlwm thib ob yog thaj chaw sib thooj nyob rau ntawm ntug qis ntawm lub lens.Qhov sib thooj yog tus naj npawb ntawm cov degrees xav pom cov khoom nyob ze.
Qhov thib peb yog thaj chaw nruab nrab uas txuas ob.Nws yog hu ua gradient cheeb tsam, uas maj mam hloov lub degree ntawm saib deb mus rau lub degree ntawm saib ze, yog li ntawd koj yuav siv tau nws mus saib cov khoom nyob rau hauv nruab nrab deb.Nyob rau hauv cov tsos, cov lo ntsiab muag loj multifocal yog indistinguishable los ntawm ib txwm lo ntsiab muag.
Ob, hom kev nce qib multifocal lens yog dab tsi?
Nyob rau hauv xyoo tas los no, kev txhim kho multifocal lens tau tsim thiab nrov heev hauv Suav teb.Tam sim no, raws li hom kev siv lub qhov muag thiab cov yam ntxwv ntawm lub cev ntawm cov neeg muaj hnub nyoog sib txawv, cov kev tshawb fawb sib xws ntawm ntau lub focal lo ntsiab muag tuaj yeem muab faib ua peb pawg:
1. Cov tub ntxhais hluas myopia tswj lens.Siv los txo qhov pom kev qaug zog thiab tswj kev loj hlob ntawm myopia.
2. Anti- nkees lo ntsiab muag rau cov neeg laus.Nws yog siv rau ntau tus neeg ua haujlwm nyob ze kom txo qhov pom kev qaug zog los ntawm kev ua haujlwm.
3. Progressive lo ntsiab muag rau cov neeg laus thiab cov laus.Ib nkawm tsom iav rau cov hnub nyoog nruab nrab thiab cov neeg laus tuaj yeem pom tau yooj yim nyob deb thiab ze, kom koj lub qhov muag tuaj yeem pom qhov kev xav ntawm cov hluas.
Peb, Dab tsi yog qhov kev ua haujlwm ntawm kev nce qib multifocal lens?
(1) Txo qhov pom kev qaug zog thiab tswj kev loj hlob ceev ntawm myopia, tab sis tsis yog txhua tus tub ntxhais hluas tsim nyog rau kev hnav cov tsom iav loj loj, cov pej xeem raug txwv, lub lens tsuas yog muaj qee yam cuam tshuam rau kev hloov pauv ntawm kev lag luam thiab implicit oblique myopia cov me nyuam.
Nco tseg: Vim tias feem ntau cov neeg mob uas muaj myopia muaj kev cuam tshuam sab nraud ntau dua li qhov tsis pom tseeb, tus naj npawb ntawm cov neeg tsim nyog rau kev hnav cov tsom iav ntau lub ntsej muag los tswj myopia muaj tsawg, uas tsuas yog kwv yees li 10% ntawm cov menyuam yaus thiab cov tub ntxhais hluas uas muaj myopia.
(2) Cov kws qhia ntawv, kws kho mob, nyob ze thiab ntau tus neeg siv computer, txhawm rau txo qhov pom kev qaug zog los ntawm kev ua haujlwm.
Rau cov neeg muaj hnub nyoog nruab nrab thiab cov neeg laus uas muaj ob lub tsom iav kom yooj yim pom kev pom nyob ze.Progressive multifocal lens yog tsim los muab txoj hauv kev zoo, yooj yim thiab xis rau cov neeg mob presbyopia kho.Hnav looj tsom iav zoo li siv lub koob yees duab yees duab.Ob lub tsom iav tuaj yeem pom cov khoom nyob deb, ze thiab nruab nrab ntawm qhov deb kom meej.Yog li ntawd, peb piav qhia txog cov lo ntsiab muag ua tau zoo li "lens that zoom", thiab muab tso rau ntawm ob lub tsom iav uas sib npaug rau kev them nyiaj ntau dua rau tsom iav.
Plaub, Kuv yuav tsum xyuam xim rau dab tsi thaum hnav lub ntsej muag multifocal?
(1) Thaum xaiv daim iav thav duab, qhov loj ntawm tus ncej yog nruj.Nws yog ib qho tsim nyog los xaiv qhov tsim nyog thav duab dav thiab qhov siab raws li cov tub ntxhais kawm nyob deb.
(2) Tom qab hnav tsom iav, thaum saib cov khoom ntawm ob sab, koj tuaj yeem pom tias qhov pom tseeb tau txo qis thiab cov khoom deformed, uas yog qhov qub heev.Lub sijhawm no, koj yuav tsum tig koj lub taub hau me ntsis thiab sim saib los ntawm qhov nruab nrab ntawm lub lens, thiab qhov tsis xis nyob yuav ploj mus.
(3) Thaum mus rau pem hauv ntej, lub tsom iav yuav tsum qis kom deb li deb tau los ntawm sab saum toj kom pom tawm ntawm cheeb tsam.
(4) Glaucoma, qhov muag raug mob, mob qhov muag mob, kub siab, ncauj tsev menyuam spondylosis thiab lwm tus neeg tsis pom zoo siv.
Post lub sij hawm: Sep-17-2022