January 21, 2010 
Scientists say that 56 percent of people have a problem with seeing, and that they don’t even know about it. For them, watching a movie in 3D is impossible …
Hit film “Avatar,” which filles cinemas around the world, in Croatia also, for about 56 percent of Croats and the same percentage of the audience in the world could be a disappointment. Why? That percentage of people because of someone eye defect does not see three-dimensional images and their experience of nearly three-hour film is actually significantly reduced, according to the American College of Optometrists.
However, many of those people does not really know why they are deprived of enjoying in the “Avatar“, but scientists can explain it clearly.
They get headaches
The problem is that these people have major or minor problems with the so-called binocular sight, i.e for various types of defect of the eye can not properly perceive the image in the brain, which is the essence ofl 3D technology.
The scientists explain that such a 3D version of “Avatar” has two images projected on the screen, and viewers watch each of them with one eye. Then the images are combined in the brain in only one. If the images are not perceived properly, they can not be well connected and there is no 3D image.
– There are various types of vision problems, and some people with some of those vision problems can sometimes see the 3D image for a certain time, a the other time can not, which will cause headaches for them or will make the watching of the film very uncomfortable – said dr. Habermehl Bradley, Head of College of Optometrists.
He claims that 56 percent of people aged 18 to 38 years has a problem with binocular sight and that they don’t even know about it. Also, about five percent of citizens have the so called lazy eye or strabismus, or even both, which makes it impossible to watch 3D movies.
The amazing change
However, experts claim that there is a cure for those who decide for optometry therapy. Dr. Susan R. Barry, professor of neurology at Mount Holyoke College, who most of her life lived with a problem of binocular vision, says that, with the help of persistent exercise, she finally „saw“ in 3D.
To transferre her experience to others, she even wrote a book that came out last year.
– Three-dimensional view provides a completely different view than watching with ‘one eye’. When I saw ‘stereo’, that was an amazing change – says Barry.
Taken from: www.jutarnji.hr