Uma uneminyaka engaphezu kuka-40 futhi unobunzima bokubona kwakho eduze nalapho ufinyelela ingalo, kungenzeka ukuthi ubhekene ne-presbyopia. Amalensi aqhubekayo ayisixazululo sethu esingcono kakhulu se-presbyopia, akunikeza umbono obukhali kunoma yiliphi ibanga.
Njengamalensi e-bifocal, amalensi e-multifocal aqhubekayo enza umsebenzisi akwazi ukubona kahle ebangeni elihlukene ngelensi eyodwa. Ilensi eqhubekayo ishintsha kancane kancane amandla ukusuka phezulu kwelensi ukuya phansi, inikeze uguquko olushelelayo ukusuka ekubonweni kwebanga ukuya ekuboneni okumaphakathi/kwekhompuyutha ukuya kumbono oseduze/wokufunda.
Ngokungafani nama-bifocals, amalensi ezinto eziningi athuthukayo awanayo imigqa ehlukile noma amasegimenti futhi anenzuzo yokunikeza umbono ocacile ebangeni elikhulu lamabanga, angakukhawuleli kumabanga amabili noma amathathu. Lokhu kubenza babe ukukhetha okudumile kubantu abaningi.
Noma ilensi eqhubekayo ikuvumela ukuthi ubone amabanga aseduze nakude ngokucacile, lawa ma-lens awawona inketho elungile yawo wonke umuntu.
Abanye abantu abalokothi bazijwayeze ukugqoka ilensi eqhubekayo. Uma lokhu kwenzeka kuwe, ungase ube nesiyezi njalo, izinkinga zokubona ukujula, nokuhlanekezelwa kwe-peripheral.
Okuwukuphela kwendlela yokwazi ukuthi ama-lens aqhubekayo azokusebenzela yini ukuthi uwazame futhi ubone ukuthi amehlo akho ajwayela kanjani. Uma ungajwayelani nezimo ngemva kwamasonto amabili, udokotela wakho wamehlo angase adinge ukulungisa amandla kulensi yakho. Uma izinkinga ziqhubeka, ilensi ye-bifocal ingase ikufanelekele kangcono.