I've often seen it said that hobbyist-grade UV lasers, sold for a few hundred dollars to those brave enough to buy one, cause a serious risk of blindness. In the literature I see reference to eye damage from as little as 5 mJ/cm^2, which seems absurdly easy to attain. And every time I think of a Russian aircraft flying over Ukraine, or even an infantry lookout standing beside a vast rubble wilderness of empty windowframes, I can't understand why these weapons aren't being used on them. On the other hand of course, I'm glad (but equally mystified) why they're not being used against the Ukrainians or even the courageous protesters in Russia. Can someone explain how this infamous genie has been kept in the bottle all this time?