http://www.laserpointersafety.com/la...head-eyes.html
http://www.sciencebuddies.org/scienc...r_Safety.shtml
https://en.wikipedia.org/wiki/Laser_safety
http://www.lasersafetyfacts.com/2/...
WHAT IS A CLASS 2 LASER?
Class 2 lasers are considered safe for normal operation. Class 2 lasers' output power is below 1 milliwatt. All Class 2 lasers emit visible light only. A Class 2 laser is relatively weak. It normally would not harm an eye beam.
unless a person deliberately stared into the beam. (reflection - mousie)
However, even a Class 2 laser can be a distraction, glare or flashblindness hazard for pilots and drivers. NEVER aim any laser towards an aircraft or vehicle that is in motion. This is unsafe and is illegal -- you could be arrested and jailed.