Indorerwamo z'izuba z'abagabo n'abagore, acetate & icyuma hamwe na lensike ya polarize, ibicuruzwa byakurikiranwe hamwe nubwoko butandukanye bwo guhuza imiterere itandukanye, kandi igiciro gikwiranye nuburyo bwibihugu byo muburasirazuba bwo hagati.