Magalasi otsetsereka ndi magalasi omwe amavala kuti ateteze maso pamene akusefukira.Magalasi otsetsereka amayenera kuteteza maso a skier chifukwa cha kuwala kwa dzuwa pa chipale chofewa komanso kukondoweza kwa maso ndi mphepo yozizira panthawi yotsetsereka.Zindikirani kuti otsetsereka otsetsereka omwe amavala magalasi ayenera kusankha magalasi a chipale chofewa a OTG (Over The Glasses) kuti aphimbe myopia yawo yonse.

Ntchito
Ma lens otsetsereka asintha kuchoka pa wosanjikiza umodzi kupita pawiri, kuchoka ku kusakhala chifunga kupita ku anti-fog, ndipo atha kugwiritsidwa ntchito munthawi zosiyanasiyana zanyengo pomwe sayansi ndiukadaulo zapita patsogolo.Chojambulacho chimapangidwa ndi pulasitiki, chomwe chili chotetezeka, ndipo disololo limakhala lachikasu kapena lofiirira.Zotsatirazi ziyenera kuphatikizidwa mu magalasi otsetsereka:
Choyamba, pewani mphepo yozizira kuti isakhumudwitse maso anu;chachiwiri, tetezani kuti cheza cha ultraviolet chisawotche maso anu.
Chachitatu, mandala amkati sakhala fogable.
Chachinayi, magalasi otsetsereka sayenera kuyambitsa kuvulala kumaso pambuyo pa kugwa.(Zindikirani: Kuti aphimbe myopia kwathunthu, otsetsereka otsetsereka omwe amavala magalasi ayenera kusankha magalasi otsetsereka a OTG (Pamwamba pa Magalasi).

Chachisanu, kukana kwa ma lens, muyezo wapadziko lonse lapansi uyenera kupitilira mayeso a mpira wadontho (DROP BALL TEST) ndi kuyesa kukana mphamvu.