Last October, a guy turned up at the place I used to work. He was doing a demo on a new laser scanner the boss wanted. He was 2 hours late, very rushed, very incompetent.
He set up the scanner, donned his safety glasses and started talking to us (my boss and I).
Immediately, my boss asked "Ummm, won't we need safety glasses too?".
Demo guy's response "No, these are eye-safe. I am just being over-cautious because I work close to the scanners all day."
Boss "Well that's ok, as it'd alarm our customers if we turned up and had to wear and hand out PPE in their workshops and hangars."
Demo guy then stands with his back to the laser scanner, drawing our conversation/gaze toward him. He didn't tell us he'd started the scanner running either. He talked about how he would scan the demo at the highest power/resolution.
So...fast forward 1 hour. I'm driving home. Both eyes aching. Left eye feels like I've been looking at the sun too long (white dots even with eyelid closed).
Next day, right eye ok, left eye is like looking through net curtains.
Day 3, go to optician. They check me over. No sign of retinal damage, no sign of any eye health issues. Refer me to opthalmologist.
In the meantime, the boss has emailed demo guy, explaining that he seems to have hurt our eyes. His response "our technical department say that the scanners are eye safe, as long as you're more than 10m away. Unless it's on its highest resolution. Then the eye safe distance is higher." My bosses response "Rob, may I remind you that you scanned at the highest resolution, and that Matt and I were only 2m away."
Demo guy's response "Oh ok. Sorry about thar. by the way, a you interested in purchasing the scanner?"

So yesterday (11.5 months later), I finally get to go to my referral appointment. By now, the residual damage is a small bean-shaped black/brown mark. It's just out of the centre of my vision in my left eye. Imagine looking at your PC screen. As you read each word, there's something about the same size as a fly on your screen, just to the right. That's the level of distraction I'm getting, all day, every day.
Opthalmologist says they can't see any actual retina damage, but will continue to test in the future. 2.5 hours of eye drops, dilated pupils, pressure tests, dye in eyes etc yesterday showed nothing. But she has said that what I'm describing ties in with symptoms of retina damage. She has also said that there are no other eye health issues that I have whatsoever. Whatever IT is, I've got it for life.
So, what would you do?
I'm not really concerned about getting money from some compo claim. But everyone is telling I should. I've got scarred eyesight for life. It's that distracting that I don't enjoy reading at all any more. If I look up at the sky, my eye just tracks the mark and eventually I get a bit dizzy from my eye just not focusing on what I'm trying to look at.
I think I might just talk to my now ex - boss and see what he suggests. He would probably be keen to see me compensated for it. But I'm keen to make sure that aforementioned demo guy never gets to do anything like this ever again.