QUOTE said:Virtual reality headsets use the same technique for displaying 3D as we find in movies or 3D television sets - parallax. They project a slightly different image to each one of your eyes, and from that difference, your brain creates the illusion of depth. That sounds fine, until you realize just how complicated human depth perception really is. The Wikipedia entry on depth perception (an excellent read) lists ten different cues that your brain uses to figure out exactly how far away something is. Parallax is just one of them. Since the various movie and television display technologies only offer parallax-based depth cues, your brain basically has to ignore several other cues while you're immersed in the world of Avatar. This is why the 3D of films doesn't feel quite right. Basically, you're fighting with your own brain, which is getting a bit confused. It's got some cues to give it a sense of depth, but it's missing others. Eventually your brain just starts ignoring the other cues.
That's the problem. When the movie's over, and you take your glasses off, your brain is still ignoring all those depth perception cues. It'll come back to normal, eventually. Some people will snap right back. In others, it might take a few hours. This condition, known as 'binocular dysphoria', is the price you pay for cheating your brain into believing the illusion of 3D. Until someone invents some other form of 3D projection (many have tried, no one has really succeeded), binocular dysphoria will be part of the experience.
Video games are one of the great distractions of youth. Children can play them for hours every day, and our testers realized that children - with their highly malleable nervous systems - could potentially suffer permanent damage from regular and extensive exposure to a system which created binocular dysphoria in its users.
All of this is rolling forward without any thought to the potential health hazards of continuous, long-term exposure to 3D. None of the television manufacturers have done any health & safety testing around this. They must believe that if it's safe enough for the cinema, it's fine for the living room. But that's simply not the case. Getting a few hours every few weeks is nothing like getting a few hours, every single day.
Source: http://www.abc.net.au/unleashed/stories/s2813511.htm
Loss of 3D vision is a kind of high price to pay for the 3DS (or other consoles/TVs with 3Dscreens) What do you guys think? (Replace children and youth in the before-last paragraph by Tempers for an even bigger impression