Re thabetse ho phatlalatsa sehlahisoa sa rona sa morao-rao: likhalase tsa boleng bo holimo tsa optical. Likhalase tsena tse peli li na le foreimi e entsoeng ka thepa ea boleng bo holimo ea acetate, e nang le mokhoa oa khale le ponahalo ea motheo, e fetohang. Likhalase tsa rona li kenyelletsa li-hinges tsa selemo tse tenyetsehang, tse etsang hore li phutholohe ho li apara. Ntle le moo, re fana ka mokhoa o ikhethileng oa LOGO ea boholo bo boholo le likhalase tse ka ntle tsa ho paka ho khotsofatsa litlhoko tse ikhethileng tsa bareki ba rona.

Likhalase tsa rona tsa optical ha li feshene feela empa hape ke tsa boleng bo holimo le boqapi bo botle. Foreimi e hahiloe ka thepa ea boleng bo holimo ea acetate, e netefatsang ho tšoarella le botsitso ba likhalase. Mokhoa o tloaelehileng oa moralo oa likhalase tsena o etsa hore li tenyetsehe ka mokhoa o makatsang; ebang li aparoa letsatsi le letsatsi kapa tsa khoebo, li ka hlalosa botho ba hau le tatso ea hau.

Kaho ea hinge ea selemo e lumella li-spectacles hore li lumellane ka thata ho pota-pota sefahleho 'me ha ho bonolo hore li oe. E boetse e imolla khatello ha u e apara, e u lumella ho e apara ka nako e telele u phutholohile. Re ela hloko lintlha tse ngata 'me re ikitlaelletsa ho fa bareki phihlelo e kholo ka ho fetisisa ea mosebedisi.

Ntle le boleng ba thepa, re fana ka tlhophiso ea li-LOGO tse nang le bokhoni bo boholo le phetoho ea liphutheloana tsa kantle tsa likhalase. Bareki ba ka hatisa LOGO ea bespoke likhalaseng ho lumellana le litlhoko tsa bona, kapa ba ka hlophisa sephutheloana sa ka ntle sa likhalase tsa mantlha ho etsa hore lintho li ikhethile le ho ba tsa botho.

Likhalase tsa rona tsa optical hase feela lisebelisoa tsa feshene, empa hape ke letšoao la bophelo bo khotsofatsang. Re ikemiselitse ho fa bareki liaparo tsa mahlo tsa boleng bo holimo tse khotsofatsang litlhoko tsa bona. Re lumela hore ho reka lintho tsa rona ho tla ntlafatsa boleng le boiketlo ba bophelo ba hau.

Hore na u motho kapa u morekisi, re u mema hore u ikopanye le rona ho ithuta haholoanyane ka likhalase tsa rona tsa mahlo. Re labalabela ho sebelisana le uena ho aha bokamoso bo khanyang hammoho.