[edoo]

It might be fun to come up with the probability of a worse case scenario, like parked on the crest of a hill in bumper to bumper traffic.

Although probably not practical to worry about in reality, there is some probability that all 200 cars you could see shine their lasers directly into your eyes at the exact same time. There is some probability of accidentally receiving a momentary higher than safe combined pulse from multiple vehicles.

[tzs]

> Although probably not practical to worry about in reality, there is some probability that all 200 cars you could see shine their lasers directly into your eyes at the exact same time. There is some probability of accidentally receiving a momentary higher than safe combined pulse from multiple vehicles

Would that actually matter? Each of those would be coming from a different direction, and be focused on a different spot on the retina. No particular spot on the retina would receive an unsafe exposure.

[DenisM]

There are wavelength that are invisible to human eye, those are pretty safe unless the energy levels are high enough to burn a hole in your retina.

Then there are wavelength that aren’t focuse by the eyes, the only way to get hurt with these if the energy reaches weapon-grade levels.

[salty_biscuits]

Actually, some non visible wavelengths are dangerous because they don't make you blink.

[godelski]

A lot of infrared lasers are dangerous because of this. Blink response is part of the reason visible lasers are classified differently than invisible lasers.

[jfoutz]

Worst I can think of is a peephole in a cheap apartment looking over a turn on a freeway.

Perhaps a fisheye mirror on a big truck.

[salty_biscuits]

Looking at them through binoculars (basis for ENOHD safety standard).