Today I'd like to talk about the emergence of 3D television. This is becoming more and more popular and may replace regular tv in the future. The basic way that we perceive depth with our eyes is that each eye sees a slightly different image and the brain merges them into a single 3D world. This is caused binocular vision. The way television manufacturers produce 3D is based on this. The special glasses that are worn cause each eye to see a slightly different image on the screen and the brain perceives this as 3D. The only catch is that not every person has good binocular vision. Some people with poor eye muscle balance will experience eyestrain and headaches when viewing a 3D television. Certain people can experience motion sickness and dizziness. And finally, there are many people with vision problems that don't allow them to have binocular vision. These people will quickly realize something is wrong because they won't be able to see their new tv in 3D! Fortunately many of these issues can be addressed in a comprehensive eye examination. I anticipate seeing many patients over the coming years who never would have had an eye exam if they didn't have a 3D television to tell them something is wrong. Who would have thought that a television would help us detect vision problems. The AOA recommends seeing a doctor of optometry for further evaluation if consumers answer yes to any of the following questions:
* Is the 3D viewing experience not as vivid as it is for others watching the same picture?
* Do you experience eyestrain or headaches during or after viewing?
* Do you feel nauseous or dizzy during or after viewing?
* Are you more comfortable viewing 2D TV or movies instead of 3D TV/movies?
* Is it difficult for your eyes to adjust back to normal after watching 3D TV/movies?
* Is the picture not in 3D?
While this technology is in its early stages now, odds are that you will be exposed to it at some point in the future. If you plan on investing in one, make sure an eye examination is a part of your decision.
