1.56 Semi Yarangije Bifocal Photochromic Photogrey Optical Lens

Iyo guhindura ijisho ry'umuntu gucogora bitewe n'imyaka, aba akeneye gukosora icyerekezo cye ukurikije icyerekezo cya kure kandi cyegereye. Muri iki gihe, akenera kwambara ibirahuri bibiri bitandukanye, ibyo bikaba bitoroshye. Niyo mpamvu, birakenewe gusya imbaraga ebyiri zitandukanye zo kuvunika kumurongo umwe kugirango uhinduke lens mubice bibiri. Izo lens zitwa bifocal lens cyangwa ibirahuri bifocal.

Lens ya Binocular cyangwa lens bifocal ni lens irimo uduce tubiri two gukosora icyarimwe kandi ikoreshwa cyane mugukosora presbyopia. Agace ka lens ya binocular ikosora iyerekwa rya kure ryitwa iyerekwa rya kure, naho agace kegeranye gukosorwa bita iyerekwa ryegereye hamwe n’ahantu ho gusomera. Mubisanzwe, umurima wa kure ni munini, nuko nanone witwa umurima nyamukuru, mugihe umurima wegereye ari muto, bityo witwa sub-field.