Audioholics.com produced a valuable piece of investigative journalism describing the dangers of stereographic simulators aka, 3d video. Turns out that your ability to perfectly focus each eye on the same point in the distance is a learned skill. Your mind must be able to syncronise your optic nerves with your optic muscles to give you the ability to judge distance and see the natural 3D world around you. Otherwise, you develop stereopsis or lazy eye.
The dangerous part is that since 3D videos and movies where you have to wear glasses force feeds each eye precisely paired 2D images, your mind doesn’t have to train your optic muscles to focus. Both eyes can just lazily relax and your mind will see the 3D video. This is no different than spoon feeding a child until he is 10 years old. He will have no hand-to-mouth coordination.
Audioholics explains, “Stereoscopic vision begins developing when we first start using our eyes and is generally considered complete by the time we’re around six years old. That’s when the tiny nerves and muscles behind the eye are fully formed and have learned to work in conjunction with the brain to respond automatically to visual cues that provide seamless depth of vision.” – BWK http://twitter.com/journik