3D Movies May Have Negative Impact on Eyes
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| Juli McDonald |
| 7/29/2010 |
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| If you happen to drive by a movie theater, there`s a good chance you`ll see at least a few movies listed in 3D on the marquee. 3D movies are all the rage right now, but could too much time behind those glasses be harmful? The 3D effect makes movies memorable, especially compared to how we`re used to viewing films. But doctors have concerns about what effects there might be if all movies are eventually offered in 3D. It`s been a big summer at the box office, and that might be partly due to more and more must-see movies enhanced with 3D technology. "The way that 3D glasses work is that you see one image with your right eye and you see another image with your left eye. It`s the same show from a different angle so your eyes and brain have to bring these two images together and fuse them, and that`s what gives you the awesome 3D effect," explained optometrist Dr. Daniel Long, with Eyecare Professionals. The desired illusion is to give more depth, but some doctors say the false perception of movement can be confusing for the human eye. "You are absolutely still but things are moving at you. You might be falling off a waterfall, so the parts of the brain which are responsible for balance, they start having some dysfunction," said Dr. Parag Kumar, Medcenter One pediatrician. "As a result, these people have nausea, vomiting, migraines and even seizures." 3D technology is also making its way to television and video games. Kumar has concerns because 3D TV is completely uncharted territory. "Now we really don`t know what will be the long term effects of somebody glued to their TV for six hours. Maybe short term it doesn`t make a difference, but we don`t know what the long term effects are going to be," said Kumar. Kumar says all children should be limited to two hours of combined screen time per day. Likewise, Long says he doesn`t have a problem with his patients viewing 3D movies, as long as they balance it with other activities requiring them to use their eyes normally. Kumar says the group of people most susceptible to the negative effects of 3D viewing include people who have migraines, astigmatisms or even slightly unequal vision. |
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