On Friday, 20 January 2017 14:44:08 UTC, Brian Gaff wrote:
I don't like halogen. gives me a headache even though I cannot see. I get
this spreading green yellow flashing haze when I go near Halogen lighting..
Goes to prove I guess that even blind eyes can give strange effects.
Brian

Have you found out why, as our brains tell use what we think we see rather than what is there, so something in your brain is causing this rather than your eyes I would have thought. I wonder what sot of light halagen give out that no other light source including the sun gives out.

Interesting I think you need to be tied to a chair and experimnted on by shining differnt sorts of lights at you :-)