For the people whose eyes hurt while watching the latest summer blockbuster on 3D screens – it’s not just you. A research team at the University of California, Berkeley has concluded that viewing content on a stereo 3D display hurts both your eyes and brain. Author Martin S. Banks writes that “when watching stereo 3D displays, the eyes must focus — that is, accommodate — to the distance of the screen because that’s where the light comes from. At the same time, the eyes must converge to the distance of the stereo content, which may be in front of or behind the screen.” Banks, who is also a professor of optometry and vision science, wrote the entry on a Journal of Vision article: The Zone of Comfort: Predicting Visual Discomfort with Stereo Displays. Additionally, content viewed from short distances (like 3D monitors and soon, 3D mobile phones and tablets) is more uncomfortable the stereo content is placed in front of the screen.
Source: Tech Crunch