Rea u amohela kenyelletsong ea sehlahisoa sa rona; re thabela ho u tsebisa ka likhalase tsa rona tsa morao-rao tsa optical. Likhalase tsa rona tsa mahlo li kopanya setaele sa sejoale-joale le lisebelisoa tsa boleng bo holimo ho etsa para ea likhalase tse sa feleng le tse tenyetsehang.

Ha re qaleng ka moralo oa li-spectacles. Likhalase tsa rona tsa optical li na le moralo oa foreimi ea setaele e tloaelehileng ebile e fetoha le maemo. E ka senola botho ba hau le tatso ea hau ha u apere liaparo tse tloaelehileng kapa tse tloaelehileng. Foreimi e entsoe ka fiber ea acetate, e seng feela e nang le sebopeho se ntlafetseng empa hape e matla haholoanyane, e lumellang likhalase ho boloka botle le boleng ba tsona nako e telele. Ho feta moo, re fana ka khetho ea liforeimi tsa mebala eo u ka khethang ho eona, kahoo, hore na u khetha mebala e metšo ea maemo a tlase kapa e fesheneng e bonaletsang, u ka fumana moralo o lumellanang le uena.

Ntle le moralo le thepa, likhalase tsa rona tsa optical li lumella logo e kholo le tlhophiso ea liphutheloana tsa khalase. Sena se bolela hore o ka kenya LOGO e hlakileng likhalaseng ho latela litlhoko tsa hau le setšoantšo sa mofuta oa hau, hammoho le ho etsa sephutheloana sa likhalase tse ikhethileng, ho etsa hore likhalase tsa hau li khethollehe le ho bonahatsa sebopeho se ikhethileng sa mofuta oa hau.

Hore na o batla ho latela mekhoa ea feshene kapa ho etelletsa pele boleng le boiketlo ba likhalase tsa hau, likhalase tsa rona tsa optical li ka khotsofatsa likhetho tsa hau. Re lumela hore likhalase tsa boleng bo holimo li kanna tsa se boloke mahlo a hau feela, empa hape li ka u thusa ho u thusa ka mokhoa oa ho qetela. Khetha likhalase tsa rona tsa optical e le hore likhalase tsa hau e be sesebelisoa sa ho lokisa pono feela, empa hape le lisebelisoa tsa feshene tse bonts'ang botho ba hau le likhetho tsa hau.

Hore na o hloka ho sebelisa komporo nako e telele mosebetsing kapa ho sireletsa mahlo a hau bophelong ba letsatsi le letsatsi, likhalase tsa rona tsa mahlo li ka u fa pono e ntle ea pono. Re ikemiselitse ho u fa liaparo tsa mahlo tsa boleng bo holimo e le hore u ka hlalosa ka sebete setaele sa hau maemong afe kapa afe.

Ka bokhutšoanyane, likhalase tsa rona tsa optical ha li fane feela ka ponahalo ea feshene le lisebelisoa tsa boleng bo phahameng, empa li boetse li lumella phetoho e ikhethang ho lumellana le litlhoko tsa hau tse khethehileng. Hore na o batla ho latela mekhoa ea feshene kapa ho etelletsa pele boleng le boiketlo, re ka u thusa ho fumana likhalase tse nepahetseng. Khetha likhalase tsa rona tsa mahlo 'me u li tlohelle hore e be ntlha ea mantlha ea ponahalo ea hau ea feshene, e bonts'ang setaele le botho ba hau bo ikhethang. Rea leboha ha u sheba lihlahisoa tsa rona. Re labalabela ho u fa likhalase tsa mahlo le litšebeletso tsa boleng bo holimo.