1.523 Ikirahure gitera imbere

Ibikoresho nyamukuru byikirahure ni ikirahure cyiza. Ihererekanyabubasha hamwe nubukanishi nubumashini byikirahure cyikirahure ni byiza cyane, hamwe nigitekerezo gihora cyangirika kandi gihamye kumubiri na chimique.

Iterambere ryiterambere ritezimbere hashingiwe kumurongo wa bifocal. Ikigereranyo cyo gukoresha mu Burayi no muri Amerika ni kinini, kandi igihe cyo guhuza mu Bushinwa cyatangiye mu myaka hafi 10 gusa. Lens igenda itera imbere yerekeza buhoro buhoro hagati yuburebure bwombi bwifashishije tekinoroji ya polishinge muguhindura hagati yuburebure bwo hejuru no hepfo, ibyo bita lens igenda itera imbere. Birashobora kuvugwa ko lens igenda itera imbere ninzira yibanda cyane. Iyo uwambaye yitegereza ibintu biri kure / hafi, usibye kutagomba gukuramo ibirahure, kugenda kwerekwa hagati yuburebure bwo hejuru nuburebure bwibanze nabyo ni buhoro buhoro. Nta kumva umunaniro ko ijisho rigomba guhora rihindura uburebure bwibanze mugihe ukoresheje ubwoko bubiri-bwibanze, kandi ntamurongo ugaragara ugabanya uburebure bwombi. Gusa ikibabaje ni uko hari uturere twa interineti zitandukanye ku mpande zombi za firime igenda itera imbere, bizatuma umurima ukikije iyerekwa utanga koga.