No "persistent vision." When I look away I don't see the image, I see lines, etc similar to (but not as severe as) what I'd see if I looked at a bright light too long, then looked away.
I also remember having infrequent odd moments (at around the same time the picture/video thing started) where I'd look at a word while reading and it would make sense, but then suddenly something would change and the word would confuse me. I would begin thinking things like, "WTF just happened?" or, "is this the right word?" or, "is this word spelt properly?" or, "it doesn't seem right, something seems off." I would stare at the word for a while completely puzzled, then something would change and everything would make sense again. I don't experience this word problem now.
Edited by Joel, 31 December 2012 - 04:30 PM.