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1.56 Semi Yarangije Ubururu Gukata Bifocal Ifoto yumukara optique
Munsi yizuba, ibara rya lens rihinduka umwijima kandi itumanaho ryumucyo rigabanuka iyo ryerekanwe na ultraviolet numucyo mugufi ugaragara.Mu nzu cyangwa mu icuraburindi ryijimye urumuri rwiyongera, rugenda rusubira inyuma.Photochromism ya lens irikora kandi irashobora guhinduka.Ibirahuri bihindura amabara birashobora guhindura ihererekanyabubasha binyuze mu guhinduranya amabara ya lens, kugirango ijisho ryumuntu rishobore guhuza n’imihindagurikire y’urumuri rw’ibidukikije, kugabanya umunaniro ugaragara, no kurinda amaso.
