First of all, I know about the standard medical advice disclaimer, and yes I will go and see an optician about this. I’m just curious.
My job requires a lot of reading, both on screen and on paper (I do a lot of proofreading). Recently I’ve noticed a strange effect when reading black text on white paper - the letters seem to have a coloured fringe around them. It’s difficult to identify the colours, as it’s a kind of shifting effect that disappears when I try to look at it closely, but basically red and green/yellow. The closest parallel that I can think of is the chromatic aberration you get with camera lenses, and I assume it might be a similar thing that’s happening with my eyes.
So, a couple of questions: is there any common condition that might be causing this, or is it simply a sign of eye strain? And is it related to chromatic aberration?