I once tried to read two pages at a time (one with each eye) because I heard that the rain man was able to do that. So a grabbed a small paperback and focused one eye on either page (as one would do with a magic-eye picture).
I was able to essentially line up two words at a time in my vision and alternate my focus between the two, but after about 20 minutes I started to get a headache, so I put the book down and went to the couch in the other room. I sat down and looked out my window which has vertical bars on it. My vision suddenly latched on to the vertical bars and began flickering between normal focus and the magic-eye focus. I started feeling dizzy, my heart rate sped up and I started sweating a little. I closed my eyes for some time and was able to relax but still had a strange headache for the rest of the evening.
I felt fine the next day, but then a couple days later I was in a hotel with black and white tiled floors (diner style) and I had a sudden recurrence of my focus uncontrollably reacting to the pattern of the floor. It wasn't as intense as the first time, and it hasn't happened since, but it freaked me out.
I once tried to read two pages at a time (one with each eye) because I heard that the rain man was able to do that. So a grabbed a small paperback and focused one eye on either page (as one would do with a magic-eye picture).
I was able to essentially line up two words at a time in my vision and alternate my focus between the two, but after about 20 minutes I started to get a headache, so I put the book down and went to the couch in the other room. I sat down and looked out my window which has vertical bars on it. My vision suddenly latched on to the vertical bars and began flickering between normal focus and the magic-eye focus. I started feeling dizzy, my heart rate sped up and I started sweating a little. I closed my eyes for some time and was able to relax but still had a strange headache for the rest of the evening.
I felt fine the next day, but then a couple days later I was in a hotel with black and white tiled floors (diner style) and I had a sudden recurrence of my focus uncontrollably reacting to the pattern of the floor. It wasn't as intense as the first time, and it hasn't happened since, but it freaked me out.