Hamwe nigice cyo hasi cya lens, lens zihifuriya yerekana imbaraga ebyiri zitandukanye za dioptric, zitanga abarwayi neza hafi kandi ba kure.
Utitaye ku mpamvu ukeneye ko wandikwa hafi yegereye iyerekwa, bihacas byose bakora muri ubwo buryo. Agace gato mugice cyo hepfo yindimi kirimo imbaraga zisabwa kugirango ukosore icyerekezo cyawe hafi. Ibisigaye bya lens ni iyerekwa ryanyu. Igice cya Lens cyatanze hafi ya Vision Ikosora irashobora kuba imwe mu miterere myinshi.