_{Fektheri ea VR}

Bonolo le boiketlo bo e-s'o ka bo e-ba teng bophelong ba hau ka likhalase tsa Bifocal, likhalase tse entsoeng ka mokhoa o khethehileng tse khotsofatsang litlhoko tse ngata tsa pono. Likhalase tsa letsatsi tsa bifocal li kopanya hantle feela likhalase tsa ho bala le likhalase tsa letsatsi.

Pono eohle e haufi le e hole eo u e hlokang e lenseng e le 'ngoe.
Batho ba nang le ponelo-pele le myopia, ka ho latellana, ba ka fumana litlhoko tsa bona ka likhalase tsa setso tsa ho bala le likhalase tsa myopia. Leha ho le joalo, ho tlameha ho nchafatsa likhalase khafetsa ke phephetso ho ba boneng hole le ba sa boneng hantle. Likhalase tsa letsatsi tsa Bifocal li kenyelletsa moralo oa sejoale-joale o kopanyang pono e haufi le ponelo-pele ho para e le 'ngoe ea likhalase, e leng ho etsang hore ho be bonolo ho li bonela haufi le hole.

Likhalase tsa letsatsi e le sesebelisoa sa ho sireletsa mahlo
Lilense tsa letsatsi tsa boleng bo holimo tse ka sefang mahlaseli a UV ka katleho, tsa fokotsa ho benya, le ho sireletsa mahlo a hau ho chesoeng ke letsatsi li sebelisoa likhalaseng tsa rona tsa ho bala letsatsi. ho u thusa ho sireletsa mahlo a hau mahlaseling a UV ha u ntse u etsa mesebetsi ea ka ntle le ho boloka mahlo a bona hantle.

moralo oa foreimi setaele le pontsho ya botho
The bifocal sun reading glasses' e boreleli, ea sebopeho se bonolo sa sebopeho se na le chebahalo ea setaele e sebetsang hantle bakeng sa litlhophiso tse fapaneng. mefuta e mengata ea khetho ea mebala e lumellanang le khetho ea hau ea botle, e u nolofalletsang ho ba le pono e hlakileng le ho bonts'a sebopeho sa hau se ikhethileng.

Ho bonolo ho phela ntle le bothata bo fokolang ba ho lula u fetola lilense.
Ka melemo e kopaneng ea likhalase tsa ho bala le likhalase tsa letsatsi, li-bifocals li u bolokela nako le ho ntlafatsa boleng ba bophelo ba hau ka ho u thusa ho bona lintho tse haufi le tse hole ntle le ho lula u tima likhalase tsa hau. Etsa hore bophelo bo be bobebe ka ho lumelisa hantle bothata ba ho lula u nkile likhalase tse ngata.

Likhalase tsa letsatsi tsa Bifocal ha ho pelaelo hore e tla ba khetho e nepahetseng bophelong ba hau ka lebaka la likarolo tsa tsona tse ikhethang, ponahalo ea feshene le tšebeliso e bonolo. U tla khona ho phela bophelo bo betere 'me u be le bothata bo fokolang ka litaba tsa pono ho ea pele.