Ilensi eqhubekayo iyilensi yobude obugxile ezintweni eziningi, ehlukile ezingilazini zokufunda ezivamile kanye nezibuko zokufunda ze-bifocal. Amalensi aqhubekayo awanakho ukukhathala kwamabhola wamehlo okumele alungise njalo ubude bokugxilile lapho kusetshenziswa ubude be-bifocal, futhi awukho umugqa osobala phakathi kobude bokugxilile okubili. umugqa wokuklama. Kukhululekile ukugqoka futhi kunokubukeka okuhle, futhi kancane kancane kuye kwaba yisinqumo esingcono kakhulu kubantu abane-presbyopia.