http://laserclassroom.com/are-green-lasers-more-dangerous-than-red-lasers/
An interesting note from the laser classroom people arrived in my mailbox; it seems that inexpensive green lasers with missing shields put out a lot of 808-nm IR and so there is additional radiation that your brain will not detect and which does not contribute to the “look away” reflex. Sounds like the eclipse dangers all over again—stuff you can’t see and that your brain won’t react to can and will cook your eyes. Science for safety! Note that the description given here states that the 808-nm IR source is frequency doubled to give the green laser, but this description is too simplistic; see, for example, https://en.wikipedia.org/wiki/Laser_pointer#Green.
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