Cov teeb meem xav tau mloog
①whaen txuam tsom iav, qhov loj me ntawm tus ncej yog qhov yuav tsum tau nruj me ntsis thaum xaiv cov ncej. Qhov dav thiab qhov siab ntawm cov ncej yuav tsum tau xaiv raws li cov tub ntxhais kawm nyob deb.
②②② coj tsom iav, thaum saib cov khoom ntawm ob sab, koj yuav pom tias lub ntsiab txhais tau raug txo thiab lub ntsej muag yog deformed, uas yog heev li. Lub sijhawm no, koj yuav tsum tau tig koj lub taub hau me ntsis thiab sim pom los ntawm nruab nrab ntawm lub lens, thiab tsis xis nyob yuav ploj mus.
③when mus hauv qab, tsom iav yuav tsum tau coj qis kom deb li deb tau los ntawm thaj chaw sab sauv kom pom.
④glaucoma, qhov muag raug mob, mob qhov muag kab mob, ntshav qab zib, ncauj tsev menyuam thiab lwm tus neeg tsis pom zoo siv.
Koj puas tau hnov txog lub tsom iav? Los ntawm ib qho lo ntsiab lus siv tau-ua kom pom tseeb, cov ntsiab muag bifocal thiab tam sim no muaj kev nthuav dav multifocus lenses,
Txhim zog multifocus lo ntsiab muag tau siv dav hauv myopia tswj lo ntsiab muag rau cov hluas thiab cov ntsiab muag phem rau cov neeg laus nyob nruab nrab thiab cov laus. Koj puas paub muaj MultiFocus lo ntsiab muag?
01Peb qhov chaw ua haujlwm ntawm kev nce qib multifocus lenses
Thawj qhov chaw ua haujlwm yog nyob rau sab qaum kev ntawm lub lens deb ntawm thaj chaw deb. Thaj chaw deb yog qhov kawg yuav tsum tau pom deb, siv los saib cov khoom nyob deb.
Qhov thib ob thaj chaw ua haujlwm yog nyob ze rau ntawm lub qab qis ntawm lub lens. Qhov sib thooj thaj tsam yog qhov kawg yuav tsum tau pom ze, siv kom pom cov khoom kaw.
Qhov thib peb thaj tsam yog nruab nrab feem uas txuas rau ob, hu ua ib nrab ntawm qhov chaw deb mus rau ze, kom koj tuaj yeem siv nws kom pom cov khoom nruab nrab-deb.
Los ntawm sab nraud, muaj kev vam meej ntawm cov lenses tsis txawv los ntawm cov iav lo ntsiab muag.
02Cov nyhuv ntawm kev nce qib multifocus lenses
① Cov ntsiab muag ntau lub ntsiab muag yog tsim los muab cov neeg mob probya nrog lub ntuj, yooj yim ntawm kev kho. Hnav cov lo ntsiab muag muaj zog zoo li siv lub koob yees duab video. Ib nkawm tsom iav tuaj yeem pom ob qho tib si nyob deb thiab ze, nrog rau cov khoom nruab nrab. Yog li peb piav qhia cov lo ntsiab muag tau zoo li "zoom lo ntsiab muag", ib nkawm tsom iav yog sib npaug rau ntau lub tsom iav.
② Txo kev ua kom pom kev nkees nkees thiab tswj cov iav kev loj hlob, cov tub ntxhais hluas yog qhov tsim nyog rau kev hloov lag nrog implicit oblique cov menyuam yaus Cov.
NCO TSEG: Raws li cov neeg mob myopia muaj cov tsom iav sab nraud kom tswj tau mayopia, tus naj npawb rau tsuas yog 10% ntawm cov menyuam yaus thiab tub ntxhais hluas mayopia.
③ Cov ntsiab muag nce los kuj tseem siv tau los daws qhov pom kev nkees rau cov hluas thiab cov neeg nruab nrab. Raws li tus caj qaum ntawm lub neej, qhov muag nkees ntawm cov tub ntxhais hluas thiab nruab nrab-hnub nyoog yog ntau dua thiab tsim nyog tau txais kev tsim nyog. Kev txo cov ntsiab muag tuaj yeem ua tau zoo ib yam rau kev tawm dag zog qaug zog ua kom muaj qhov muag muag rau cov koos pij tawj, thiab tuaj yeem siv lub zeem muag ntev, nruab nrab thiab ze rau ntau lub zeem muag yav tom ntej.
03Kev xaiv ntawm kev vam meej dhau multifocal tsom iav
Cov duab puab
Tsis txhob xaiv cov thav ntawv nrog lub ntswg loj bevel vim tias thaj chaw proximal ntawm cov thav ntawv no yog qhov me me.
Cov Khoom Siv Yuav Tsum Tau
Nws yog qhov zoo tshaj plaws tsis xaiv cov phiaj thiab tr thav ntawv tsis muaj lub ntswg pads. Qhov no yog vim tias qhov chaw nyob ze ntawm cov frames feem ntau (nws yuav tsum tau khaws cia ntawm thaj chaw ze, thiab nws yog qhov nyuaj rau kho lub qaij Lub kaum sab xis ntawm tsom iav.
Qhov loj ntawm kev thov
Txoj haujlwm qhov siab ntsug sib raug rau cov tub ntxhais kawm txoj haujlwm ntawm cov tub ntxhais kawm feem ntau ua tau raws li cov khoom lag luam uas tau muaj cai tshwj xeeb lossis sib npaug ntawm 16mm + channel ntev. Yog tias muaj tshwj xeeb yuav tsum tau, koj yuav tsum xa mus rau cov cai ntawm lub lens los xaiv qhov loj me ntawm tus ncej.
Cov kev xav tau kev ua tau zoo
Cov thav ntawv nrog cov kev ruaj khov zoo yuav tsum tau xaiv kom tsis txhob muaj kev cuam tshuam nquag ntawm tsom iav cuam tshuam rau kev siv. Tsom iav tuaj yeem khaws cia ntawm kaum ntawm 10 txog 15 degrees. Lub ntsej muag nkhaus ntawm tus ncej yuav tsum ua raws li cov contours ntawm tus neeg hnav lub ntsej muag. Qhov ntev, radian thiab nruj ntawm daim iav yog tsim nyog rau kev hnav zoo li qub.
Lub Sijhawm Post: Jul-20-2022