Peb xyuas kom meej tag nrho cov khoom tiav nrog cov khoom zoo rau peb cov neeg siv khoom thiab muab kev pabcuam ua tiav, txiav txim siab tom qab muag.
Cov tsom iav nyeem ntawv yog tsim los pab tswj cov mob tshwj xeeb, hu ua presbyopia, uas tshwm sim rau koj qhov muag thaum koj muaj hnub nyoog.
Presbyopia yog qhov muag tsis tu ncua nrog cov hnub nyoog laus uas lub qhov muag lub qhov muag poob elasticity thiab yog li poob lub peev xwm los tsom rau cov khoom uas nyob ze.Raws li peb tau hais, presbyopia tsis tu ncua cuam tshuam nrog cov hnub nyoog laus, tab sis nws tuaj yeem tshwm sim rau cov neeg ntawm txhua lub hnub nyoog, thiab muaj qee cov neeg laus uas tsis muaj kev cuam tshuam.Kev nyeem tsom iav ua kom loj dua, uas ua rau nws yooj yim dua rau koj lub qhov muag tsom mus rau.
Yog tias koj tsis xav tau koj lub lo ntsiab muag tshuaj rau kev nyeem ntawv, ob lub tsom iav nyeem ntawv yuav yog ib txoj hauv kev zoo rau kev ntxiv koj cov ntawv kho mob ua ntej ua rau dhia mus rau cov tshuaj bifocals.
Yog tias koj twb muaj cov tshuaj rau cov lo ntsiab muag uas koj hnav thaum nyeem ntawv, peb xav kom ua ntxiv mus.Tsis zoo li cov tsom iav nyeem ntawv, uas yog tsim los kho cov teeb meem feem ntau tshwm sim los ntawm presbyopia, tsom iav tshuaj yuav pab daws tau ntau yam mob.
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