Kev Ceeb Toom Rau LCD Vision Chart

1. Ua kom pom qhov deb
Thaum siv cov kua siv lead ua kua tsis pom kev, nws yog ib qho tsim nyog yuav tsum muaj qhov pom kev deb, uas yog, qhov kev ncua deb ntawm lub vijtsam yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom tsis txhob cuam tshuam rau qhov pom kev kuaj pom. Cov kab kos duab LCD sib txawv muaj qhov pom kev sib txawv, uas yuav tsum tau xaiv raws li cov xwm txheej tshwj xeeb, feem ntau ntawm 40cm thiab 60cm.
2. Kho qhov ci
Thaum siv daim ntawv qhia pom LCD, nws yuav tsum tau kho lub vijtsam ci raws li qhov ci ntsa iab ntawm ib puag ncig thiab tus cwj pwm ntawm tus kheej, thiab kho nws kom haum rau qhov ci ntsa iab kom ntseeg tau qhov tseeb ntawm qhov kev sim, thaum tseem txo qhov muag nkees.
3. Ua kom yooj yim
Thaum siv daim ntawv qhia pom LCD, nws yog ib qho tseem ceeb uas yuav tsum muaj lub cev zoo ntawm lub cev thiab tsis txhob khoov lub caj dab lossis lub cev kom tsis txhob ua rau lub caj dab qaug zog. Nyob rau tib lub sijhawm, kev saib xyuas yuav tsum tau them rau kev kho lub focal ntev ntawm lub qhov muag kom muaj kev nplij siab thiab qhov tseeb thaum lub sijhawm kuaj pom kev.
4. Ua tib zoo saib xyuas lub sijhawm
Thaum ua qhov kev ntsuam xyuas qhov muag tas mus li, nws yog ib qho tseem ceeb uas yuav tsum tau so tsis tu ncua kom tsis txhob muaj qhov muag nkees thiab kev puas tsuaj los ntawm kev siv qhov muag ntau dhau. Nws raug nquahu tias lub sijhawm ntawm txhua qhov kev xeem yuav tsum tsis pub tshaj 20 feeb, thiab lub qhov muag yuav tsum tau so kom zoo thaum lub sijhawm tsis tu ncua.
5. Ua kom huv si
Daim ntawv qhia pom LCD yuav tsum tau ua kom huv si kom tsis txhob muaj plua plav, ntiv tes, thiab lwm yam khib nyiab los ntawm kev cuam tshuam cov txiaj ntsig kev xeem. Txhim kho tus cwj pwm zoo thiab tu thiab tswj lub vijtsam tsis tu ncua.
6. Kev nkag siab raug
Txhawm rau kom muaj kev nkag siab zoo ntawm qhov tseem ceeb ntawm daim ntawv ntsuas qhov muag pom ntawm LCD, tsis txhob siv nws los ua tus qauv nkaus xwb rau kev kuaj mob qhov muag xws li myopia, thiab tsis tuaj yeem siv rau kev kuaj tus kheej thiab kho. Yog tias koj muaj teeb meem tsis pom kev, koj yuav tsum mus ntsib kws kho mob tam sim ntawd.