Adjustable tsom iav tsom iav

Yuav siv li cas:
1. Ua ntej muab lub tsom iav, pom tias muaj cov dials ntawm ib sab ntawm txhua lub lens. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev hloov kho yuav ua tiav los ntawm lub xov tooj / lub pob me me.
2. Hnav tsom iav li qub.
3. Txhawm rau pib kho lub lens qib, npog ib lub qhov muag ces kho lub dial nyob rau sab nraud (lub qhov muag pom kev) Piv txwv li npog sab laug ntawm lub qhov muag, kho txoj cai lo ntsiab muag. Npog lub qhov muag sab xis, thiab kho lub lens sab laug dial.
4. Ua kev hloov kho ntawm ob lub lens ib zaug.
5. Yog tias qhov muag pom qhov muag tsis pom me ntsis, koj tuaj yeem rov ua kauj ruam 3 raws li qhov tsim nyog.

Nta:
1. Peb cov iav tsuas hnyav yog lub teeb. Koj tuaj yeem hnav lawv rau ntau teev thiab tsis nco qab koj muaj lawv.
2. Los tiv thaiv hnav, tiv thaiv poob, lub teeb lub teeb, HD, optimized thickness tsim, lub teeb yuag, ultra-nyias, ruaj khov, khawb-resistant, waterproof thiab roj-pov thawj, muab koj nrog kev ruaj ntseg kev ruaj ntseg ntau dua.

Tom qab muaj hnub nyoog 40 xyoo, presbyopia, feem ntau hu ua presbyopia, pib tshwm. Yog tias koj tsis hnav tsom iav hauv lub sijhawm tom qab qhov tsos ntawm presbyopia, lub qhov muag tswj cov leeg yuav qaug zog, ua rau mob taub hau, qhov muag o, thiab tsis muaj zog. Tom qab hnav tsom iav nyeem ntawv, cov kev tsis xis nyob no yuav raug tshem tawm.

Feem ntau, qhov degree ntawm presbyopia yog ncaj qha proportional rau hnub nyoog. Txog 40 xyoo, presbyopia yog li 50 degrees; txog 50 xyoo yog hais txog 200 degrees; 55 xyoos yog hais txog 300 degrees; hnub nyoog tshaj 60 xyoo yog hais txog 350 txog 400 degrees.

Tom qab cov neeg laus hnav tsom iav, txhawm rau txo lub nra ntawm lub qhov muag, lawv yuav tsum tau ua tib zoo saib xyuas cov ntsiab lus hauv qab no ntawm kev tu lub qhov muag:

1. Lub sijhawm ua haujlwm nrog lub qhov muag yuav tsum tsis txhob ntev dhau ntawm ib lub sijhawm, feem ntau 2 teev, thiab kev ua haujlwm ze yuav tsum tsis pub tshaj 6 teev hauv ib hnub.

2. Tsis txhob nyeem cov ntaub ntawv me dhau, sau ntawv lossis tsis meej.

3. Kev siv lub teeb pom kev zoo yuav tsum tsim nyog. Yog tias lub teeb muaj zog heev lossis tsis muaj zog, nws yuav ua rau lub qhov muag tsis pom kev. Nws yog qhov zoo dua los siv lub teeb ntuj thiab lub teeb mos rau hnub ci.

4. Tsis txhob nyeem phau ntawv lossis ntawv xov xwm tom qab noj mov lossis thaum koj nkees.

5. Hloov cov tsom iav nrog cov tshuaj uas tsim nyog rau lub sijhawm.

6. Ua lub qhov muag tsis tu ncua kom tshem tawm qhov muag qaug zog.

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