Yuav Ua Li Cas Xaiv Cov Menyuam Tsom iav?

1. UV thaiv tus nqi

Xaiv cov iav uas thaiv 100% ntawm UVA thiab UVB cov duab txhawm rau txhawm rau thaiv cov duab hluav taws xob ultraviolet mus rau qhov siab tshaj plaws.

2. Lens xim

Kev tiv thaiv UV ntawm looj tsom iav tsis muaj dab tsi cuam tshuam nrog xim ntawm lub lens. Tsuav ntev li lub lens tuaj yeem thaiv 100% ntawm lub hnub' ultraviolet rays, koj tuaj yeem xaiv lub lens xim raws li koj tus menyuam' qhov nyiam.

3. Lens loj

Cov menyuam yaus' looj tsom iav dub nrog cov iav loj, ntxiv rau tiv thaiv lub qhov muag, tseem tuaj yeem muab kev tiv thaiv rau daim tawv muag thiab tawv nqaij nyob ib ncig ntawm lub qhov muag, yog li nws yog qhov zoo tshaj los xaiv cov looj tsom iav uas muaj cov iav loj dua.

4. Cov khoom siv iav thiab thav duab

Vim tias cov menyuam yaus muaj kev lom zem thiab nquag, lawv cov looj tsom iav yuav tsum ua tau raws li cov qauv kev ua kis las, thiab lawv yuav tsum xaiv cov tsom iav uas muaj kev nyab xeeb dua thiab zam cov iav iav. Lub thav duab yuav tsum yoog raws thiab yooj yim khoov kom ntseeg tau tias lub iav haum lub ntsej muag nruj.