Ukuqonda Ama-Aspheric Progressive Presbyopic Lens Moulds: I-Deep Dive enqubweni Yabo Yokukhiqiza

Izikhundla ze-presbyopic eziqhubekayo ze-aspheric lens ziyizinto ezibalulekile ekukhiqizeni izingubo zamehlo ezithuthukile ezenzelwe ukusiza abantu abahluphekile presbyopia, isimo sombono esijwayelekile esihlobene neminyaka. Ukuqonda lezi zinkundla kubandakanya ukufaka izici zazo eziyingqayizivele, inqubo yokukhiqiza, nokubaluleka kwazo ekukhiqizweni kwelensi. Okokuqala, igama elithi "aspheric" lisho amalensi