Ligalase tsa ski ke likhalase tse roaloang ho sireletsa mahlo ha u thellisa.Ho hlokahala likhalase tsa ski ho sireletsa mahlo a skier ka lebaka la khanya e matla ea letsatsi lehloeng le ho hlohlelletsoa ha mahlo ke moea o batang nakong ea ho thella.Ho lokela ho hlokomeloa hore batho ba ski ba apereng likhalase ba lokela ho khetha likhalase tsa lehloa tsa OTG (Over The Glasses) ho koahela myopia ka botlalo.

Mosebetsi
Lilense tsa ski li fetohile ho tloha ho lera le le leng ho ea ho habeli, ho tloha ho se nang moholi ho ea ho se khahlanong le moholi, 'me li ka sebelisoa maemong a fapaneng a leholimo ha saense le theknoloji li tsoetse pele.Foreimi e entsoe ka polasetiki, e bolokehileng ho feta, 'me lense e ka khethoa e le mosehla kapa e sootho ka 'mala.Lintlha tse latelang li lokela ho kenyelletsoa ka likhalase tsa ski:
Ntlha ea pele, thibela moea o batang hore o se ke oa khopisa mahlo a hao;ea bobeli, thibela mahlaseli a ultraviolet hore a se ke a chesa mahlo a hao.
Ea boraro, lense e ka hare ha e foggable.
Ea bone, likhalase tsa ski ha lia lokela ho baka likotsi tsa sefahleho ka mor'a ho oa.(Tlhokomeliso: Ho koahela myopia ka botlalo, bapalami ba apereng likhalase ba lokela ho khetha likhalase tsa OTG tsa ski (Over The Glasses).

Ea bohlano, ho hanyetsa tšusumetso ea lense, maemo a machaba a tlameha ho feta teko ea bolo ea marotholi (DROP BALL TEST) le teko ea ho hanyetsa phello.