IiLensi zeBifocal
Ngecandelo kwindawo engezantsi ye-lens, i-lens ye-bifocal ibonisa amandla amabini ahlukeneyo e-dioptric, enika izigulane umbono ocacileyo okufutshane kunye nokude.
Iiparamitha
Nokuba sithini na isizathu sokuba ufune umyalelo wokulungisa umbono okufutshane, ii-bifocals zonke zisebenza ngendlela efanayo. Inxalenye encinci kwindawo engezantsi yelensi iqulethe amandla afunekayo ukulungisa umbono wakho okufutshane. Ilensi eseleyo iqhelekile yeyombono wakho womgama. Icandelo lelensi elinikelwe kufutshane nokulungiswa kombono inokuba yenye yeemilo ezininzi.
Bhala umyalezo wakho apha kwaye uwuthumele kuthi
