I'm 20, last had an eye exam a month ago - it was ''all healthy''. I worry alot, last night I had a extreme panick attack because I noticed around 'halegon lights' (the extremely bright ones used at carparks etc), as I got close and at a specific angle, I could faintly see a rainbow halo around them. But once I moved even a foot away, it disappeared and turned into ordinary white light. This ONLY happens on these lights, I'm not sure if it's the lights themselves causing it ... or my eyes. I tested countless different types of lights at all different angles, NONE have this affect. This rainbow is exactly symmetrical in both eyes, I have no loss of vision and no pain whatsoever. Can anyone explain, please.