Depending on how powerfull the laser, how well the beam is focused and how far away the target is yes. will you be able to tell if it it your brother or a stranger yes at 20 ft will you be able to tell what color their eyes are no. lasers are not designed for illumination. If you are tring to just light up the person without lighting up the area try a blue or red navigation light in the less than 5 lumen range.
Last edited by 8541/9999; 08-10-2010 at 07:15..