_{Fektheri ea VR}

Lihlahisoa tsa likhalase tsa ho bala letsatsi tsa Bifocal
Re thabela ho u tsebisa ka likhalase tsa rona tsa ho bala letsatsi. Mohopolo oa moralo oa likhalase tsena ke ho kopanya ts'ebetso le feshene, ho fa bareki likhalase tse sa finyelleng litlhoko tsa bona tsa pono feela empa hape li sireletsa mahlo a bona tšenyo ea UV.

1. Lilense tsa ho bala bifocal
Likhalase tsena tsa ho bala letsatsi li sebelisa lilense tsa boleng bo holimo tsa bifocal ho fihlela litlhoko tsa ponelo-pele le myopia. Halofo e ka holimo ea lense ea bifocal e sebelisoa bakeng sa pono ea hole 'me halofo e tlase ke ea pono e haufi, e lumellang bareki ho boloka pono e hlakileng hore na ba shebile hole kapa haufi.

2. Mosebetsi oa likhalase tsa letsatsi
Likhalase tsa rona tsa bifocal sun reading le tsona li kopanya mesebetsi ea likhalase tsa letsatsi, tse ka thibelang khanya e matla le mahlaseli a ultraviolet ka nepo. Sena ke sa bohlokoa haholo ho batho ba qetang nako ba le ka ntle, kaha leseli le khanyang le mahlaseli a UV a ka senya mahlo le letlalo. Likhalase tsa rona tsa letsatsi li na le ho sireletsa mahlo a hau likotsing tsena.

3. Hinge e feto-fetohang ea selemo
Likhalase tsa rona tsa letsatsi li boetse li na le li-hinges tse tenyetsehang tsa selemo, tse etsang hore li phutholohe ho li roala. Ho sa tsotellehe boholo ba hlooho ea hau, li-hinges tsa selemo li ikamahanya le boiketlo ba hau, ho etsa bonnete ba hore likhalase li lula li le boemong bo nepahetseng.

Likhalase tsa rona tsa ho bala letsatsi tse peli ke likhalase tse sebetsang haholo tse sa fihlelleng litlhoko tsa hau tsa pono feela empa hape li sireletsa mahlo a hau. Haeba u batla likhalase tse bonolo, tse sebetsang, likhalase tsa rona tsa bifocal ke khetho e nepahetseng.