Cov tsom iav caij ski yog cov tsom iav uas siv los tiv thaiv lub qhov muag thaum caij ski. Cov tsom iav caij ski yog qhov yuav tsum tau siv los tiv thaiv tus neeg caij ski lub qhov muag vim yog lub hnub ci ntsa iab rau ntawm daus thiab cua txias ua rau lub qhov muag kub thaum lub sijhawm swb. Yuav tsum nco ntsoov tias cov neeg caij ski uas hnav tsom iav yuav tsum xaiv cov tsom iav caij ski OTG (Over The Glasses) kom npog tag nrho lawv lub zeem muag tsis pom kev.

Kev Ua Haujlwm
Cov tsom iav caij ski tau hloov zuj zus los ntawm ib txheej mus rau ob txheej, los ntawm tsis muaj pos huab mus rau tiv thaiv pos huab, thiab tuaj yeem siv rau ntau yam huab cua raws li kev tshawb fawb thiab thev naus laus zis tau nce qib. Lub thav duab yog ua los ntawm yas, uas muaj kev nyab xeeb dua, thiab lub lens zoo dua yog xim daj lossis xim av. Cov yam ntxwv hauv qab no yuav tsum muaj nyob rau hauv cov tsom iav caij ski:
Ua ntej, tiv thaiv cua txias kom tsis txhob ua rau koj lub qhov muag khaus; qhov thib ob, tiv thaiv cov duab ultraviolet kom tsis txhob kub koj lub qhov muag.
Qhov thib peb, lub lens sab hauv tsis tuaj yeem ua rau pom tsis meej.
Qhov thib plaub, cov tsom iav caij ski yuav tsum tsis txhob ua rau raug mob ntawm lub ntsej muag tom qab poob. (Ceeb Toom: Yuav kom npog tau tag nrho myopia, cov neeg caij ski uas hnav tsom iav yuav tsum xaiv cov tsom iav caij ski OTG (Dhau Cov Tsom Iav).

Qhov thib tsib, qhov cuam tshuam tsis kam ntawm lub lens, tus qauv thoob ntiaj teb yuav tsum dhau qhov kev xeem pob poob (DROP BALL TEST) thiab qhov kev xeem tiv thaiv kev cuam tshuam.