I wonder how well the opthalmologist is doing. These guys are going to be paying him a visit playing around with those lasers and no PPE.

Eh, I don't see the risk, no pun intended. It's not collimated, and it's not going to be in focus anywhere but on-target. It's also probably in the long-wave range >>1000 nm that's not focused by the eye. At the end of the day it's no different from any other source of spot heating. I get more nervous around some of the LED flashlights you can buy these days.

I want one. Hot air blows.