3D cinema screen without the need for glasses

This Guardian article tells us that researchers have now developed technology that allows audiences to watch 3D films without the need to wear any kind of glasses. Unlike other glasses free devices coming available, limited to one person using them at a time, this screen would allow many people to be viewing 3D at once. A YouTube video has been released to explain the technology it uses:

This breakthrough could eradicate the problem many people have with 3D, and create a more fluid and clear viewing experience. Many people claim to have experienced headaches and other problems through the use of 3D glasses. Dr. Roger Phelps, a VSP Vision Care doctor in Ojai, California claimed many people experience problems with these various types of glasses. "I really enjoyed watching Avatar in 3D, but some of my patients did express fatigue or had a headache after seeing it," he said. "Some even said they felt nauseous during the movie." This article highlights the impact of 3D entertainment on your eyes, also explaining how "Children are using devices much, much earlier in life" nowadays. "The younger the child, the less mature their visual system and the less capable they are to handle visual stress in general." This report highlights the dangers of excessive exposure to digital imagery for children, which is often only worsened by 3D technology as it has potential to put an additional strain on spectators eyes. Could this 'Cinema 3D' glasses free technology be the answer to some of these problems?

The health issue of children watching 3D films poses a question about why 3D children's films are so successful at the box office, and whether enough precautions are taken to keep children's eyes as healthy as possible.