There have been studies that have proven that the green lasers are more dangerous than red.
It's simply because the eye is more sensitive to light frequencies in the green/yellow range.
(that could/ probably DOES differ greatly in animals - I don't know)
So green is definitely more dangerous to humans. But add on top of that there are a lot of illegally imported green laser pointers with power levels way over what is considered safe.
Any laser can be harmful depending on the length of the exposure - stare directly into a red pen laser for an hour and it'll probably do permenant damage too.
Any time you see an after image from a light, you have at least caused some very minor "damage" -but it generally goes away in about 10 minutes.
If it lasts into days and weeks, you've definitely caused some more severe damage - but that hopefully will go away as it heels.
But if you got a good blast of green light from one of those illegal lasers (depends on how powerful) it can cause permanent damage.
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Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
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