1. Nta bisigara mu karere kose, RFU <5;
2. Gukubita cyane: Ukurikije sisitemu zitandukanye za optique hamwe nuburyo bwa laser, gukubita birashobora kuba mumasegonda 0.5;
3. Ibikoresho byose bya optique byateguwe byigenga, bitunganijwe kandi biraterana, kandi sisitemu yibanze yo kugenzura laser yatejwe imbere yigenga;
4. Laser optique hamwe nibisubizo byuburyo birashobora gushyirwaho muburyo bukurikije ibyifuzo bitandukanye byabakiriya
