Techik ibara ryumuceri utondekanya optique ni ugukuraho ibinyampeke byumuceri bifite inenge cyangwa ibara ryibara ryibicuruzwa nyamukuru, byemeza ko ingano yumuceri yujuje ubuziranenge, imwe, kandi igaragara neza ituma igera kumupaki wanyuma. Inenge zikunze kugaragara ibara ry'umuceri zishobora kumenya no kuvanaho zirimo ibinyampeke bifite ibara, ibinyampeke, ibinyampeke byirabura, nibindi bikoresho byo hanze bishobora kugira ingaruka kumiterere no kugaragara kubicuruzwa byumuceri wanyuma.