Some food for thought/discussion:
I went into Sams Club with my 13 year old daughter a few months ago and saw a 3D TV on display with two sets of glasses, so we stopped to check it out. After about 10 seconds, she said "Lets go, this is making me sick!" I wasn't having any problems.
I have wondered about the difference, and why it was so immediately "wrong" for her while I believe I could have continued to watch it for a long while without issue. So far, I only have two theories:
1) Being older, I have more mature mental "filters" in my processing of visual input to more readily see what I am "supposed" to see per the system designer. IOW, I can more easily ignore/discard inaccuracies.
2) Wearing glasses with gradient bi-focals, I am used to all sorts of crappy distortions in my field of vision. My daughter has good vision without glasses.
In a way they are the same thing.
Reading the article, it is apparent the same problem exists in a theater; however, my daughter watched the entire Avatar movie in 3D with no complaints.
On reflection, this seems reasonable. We sat near the back of the theater, so the disparity between the focal distance and the visual "toe-in" would be minimal (say the focal distance was for 80 ft to the screen - the visual "toe-in" really won't change much between 30ft and 150 ft) compared to the in-store display where we were 4-5 feet from the display had the visual toe-in as close as, say, 2 feet.
