looj tsom iav dub yeej ib txwm yog ib qho yuav tsum muaj riam phom rau lub caij ntuj sov zam thiab concave zoo nyob rau hauv txhua tus neeg lub siab. Thiab feem ntau peb xav tias looj tsom iav dub tsuas yog hnav thaum lub caij ntuj sov. Tab sis peb yuav tsum paub tias lub luag haujlwm tseem ceeb ntawm looj tsom iav dub yog los tiv thaiv kev puas tsuaj ntawm cov kab hluav taws xob ultraviolet, thiab cov hluav taws xob ultraviolet muaj nyob txhua xyoo. Txhawm rau tiv thaiv peb lub qhov muag, tau kawg, peb yuav tsum hnav looj tsom iav dub txhua xyoo puag ncig. UV rays tuaj yeem ua rau peb tom qab tag nrho. Conjunctivitis, keratitis, cataracts, tshwj xeeb tshaj yog nyob rau hauv cov neeg laus nrog cataracts yog nce nyob rau hauv cov xyoo tsis ntev los no. Thiab lub hnub nyoog ntawm qhov pib zoo li txo qis. Yog li koj tuaj yeem hnav nws thaum lub caij ntuj no. Cov looj tsom iav dub tseem tuaj yeem tiv thaiv cua thiab txo qhov kev puas tsuaj ntawm cov xuab zeb thiab pob zeb rau koj ob lub qhov muag. kawg. Cov looj tsom iav dub tuaj yeem txo qhov kev xav ntawm ultraviolet rays los ntawm lub hnub ntawm txoj kev snowy. Daus tuaj yeem cuam tshuam ntau dua 90% ntawm ultraviolet rays nyob rau hauv tshav ntuj. Thiab yog tias peb liab qab, ces qhov ntau ntawm ultraviolet UVA yuav ua rau peb cov tawv nqaij mus rau hnub nyoog, thiab UVB thiab UVC yuav ci rau peb lub qhov muag, ncav cuag lub qhov muag ua rau lub qhov muag puas. Yog li ntawd, peb yuav tsum hnav looj tsom iav dub los tiv thaiv peb lub qhov muag thaum lub caij ntuj no.
Yog li cas peb yuav tsum yuav looj tsom iav dub?
Ua ntej tshaj plaws, peb xaiv cov xim saum toj no. Piv nrog rau lub caij ntuj sov, lub teeb yuav tsaus dua thaum lub caij ntuj no. Yog li sim xaiv lub teeb xim thaum koj xaiv.
1. Grey lens
Absorbs infrared rays thiab 98% ntawm ultraviolet rays, tsis hloov cov xim qub ntawm qhov chaw, xim nruab nrab, haum rau siv los ntawm txhua tus neeg.
2. Paj yeeb thiab lub teeb liab qab lo ntsiab muag
Absorbs 95% ntawm UV rays. Nws raug pom zoo tias cov poj niam uas feem ntau hnav tsom iav rau kev kho lub zeem muag xaiv cov lo ntsiab muag liab, uas muaj qhov zoo dua ntawm kev nqus ntawm ultraviolet rays.
3. Lens xim av
Absorbs 100% UV rays, lim tawm ntau lub teeb xiav, txhim kho qhov pom kev sib txawv thiab pom tseeb, thiab yog qhov tseem ceeb rau cov hnub nyoog nruab nrab thiab cov neeg laus. yog tus tsav tsheb nyiam.
4. Lub teeb xiav lo ntsiab muag
Nws tuaj yeem hnav thaum ua si ntawm lub puam. Cov lo ntsiab muag xiav yuav tsum zam thaum tsav tsheb vim tias lawv tuaj yeem ua rau peb nyuaj rau peb paub qhov txawv xim ntawm lub teeb tsheb.
5. Ntsuab lo ntsiab muag
Nws tuaj yeem nqus tau cov kab hluav taws xob infrared zoo thiab 99% ntawm cov hluav taws xob ultraviolet, ua kom lub teeb ntsuab ncav cuag lub qhov muag, thiab ua rau tib neeg xav tias tshiab thiab xis nyob. Nws yog haum rau cov neeg uas nquag mus rau qhov muag qaug zog.
6. Yellow lens
Nws tuaj yeem nqus tau 100% ntawm ultraviolet rays thiab nqus feem ntau ntawm lub teeb xiav, uas tuaj yeem txhim kho qhov sib piv.
Post lub sij hawm: Lub Xya hli ntuj-09-2022