The status of the laser system is changed by a manual switchbox that controls the warning signs wired around the lab entrances. Unfortunately, if you were in the upstairs office, you only knew ...

it can cause similar damage to that same part of the eye,” said Bartels. Jennifer Bressner says it’s important to speak out to make others aware of the dangers of laser pointers.

Class 2 lasers producing a non-visible wavelength can cause permanent damage because the blink reflex of the eye does not offer any protection here. As even some dodgy laser pointers are being ...