Originally Posted by Nixie
So you followed up with most of these people over a period of several years, and performed some eye exams to determine their continued good vision?
I've been working with them since 1994, and since they depended on high visual acuity it would be obvious if they developed symptoms like you've described. None of them did, out of literally thousands of end users.
I doubt most of them compare to the typical hadcore gamer of today--and there are many millions of them, unfortunately--who would play for many hours non-stop.
No, they are not typical hardcore gamers. They are professionals in manufacturing, oil & gas, education, medical research, etc., who have used stereo shutter glasses, HMD's, passive polarized glasses, and auto stereo displays, every day, hours and hours every day, for years.
My point is this: The number of existing 3D users is a lot larger than you are aware of. Their experience is much more extensive than you are aware of. Real world experience shows the actual number of 3D viewers that have any problems, discomfort, or other negative reactions is very, very, very small.