-
Indorerwamo z'ibara ry'umukara rya Bifocal 1.56
Muri rusange, indorerwamo za myopia zihindura amabara ntizishobora gusa kuzana uburanga n'ubwiza, ahubwo zishobora no kurwanya imirasire ya ultraviolet n'imirasire y'izuba, zishobora kurinda amaso, impamvu yo guhinduka kw'amabara ni uko iyo lens ikozwe, ivangwa n'ibintu bishobora kwangiza urumuri, nka chloride y'ifeza, halide y'ifeza (izwi nka halide y'ifeza), hamwe n'umusemburo muto wa oxide y'umuringa. Igihe cyose halide y'ifeza imurikiwe n'urumuri rwinshi, urumuri rurabora maze rugahinduka uduce twinshi tw'ifeza tw'umukara dukwirakwira mu buryo bungana muri lens. Kubwibyo, lens izagaragara nk'iyoroheje kandi ihagarike inzira y'urumuri. Muri iki gihe, lens izahinduka ibara, ibi bikaba bishobora kubuza urumuri kugera ku ntego yo kurinda amaso.
