When I first started airbrushing a couple of years ago I always cleaned my brush with Badger Airbrush cleaner. This is basically a chemical called Xylene in a can.
The stuff is pretty noxious so I always wore a respirator and ventilated well.
One night,I was cleaning the cup on the ab and sprayed some cleaner into it. It splashed back hitting me in the eye.
Boy did that hurt! I irrigated it immediately but still I had to be taken to a specialist eye emergency dept. of the hospital (my wife was not best pleased with me!)
Turned out I'd burned the cornea. Fortunately there was no permenant damage and a course of antiiotic eye drops to stop an infection prevented any long term damage.
The moral of the story...always where eye protection when dealing with nasty chemicals. I now use some wrap around goggles which you see scientist boffins wearing as the plastic is of good quality so I can still see to work.
When I emerge from the work room my son says I look like Darth Vader!