Not only is "Avatar" the top movie for yet another weekend, it apparently can also help diagnose vision problems.
who has yet to see the movie has probably heard five or six (thousand)
times that it's best seen in IMAX or 3-D. Problem is, once they get to
the theater, they might not understand what all the fuss is about,
because they find they can't see 3-D but never knew.
the 3-D used in movies projects two images onto the screen, one seen by
each eye (which is why the 1950s glasses had different-colored lenses,
one red, one blue). That's why if you look at the screen without the
glasses, it looks kind of blurry. The glasses help viewers see them
properly so the images can be merged into one by their brain. But not
everyone's eyes perceive the images correctly, and then their brain
can't merge them into one image in 3-D, explains the College of
Optometrists in Vision Development.
This can cause a degree of
discomfort, such as headaches, because the version of the film being
seen was meant to be viewed in 3-D. And the vision problems are more
widespread than one might think: 56 percent of people aged 18 to 38
have problems that could make it difficult to view 3-D properly.
Another 5 percent of the population have problems that make it
impossible to view in 3-D.
Apparently, however, there are therapeutic exercises
that can be prescribed that enable some people to gain the ability to
see in 3-D. It won't work for everyone, but perhaps the most famous
instance of such exercises working is that of neuroscientist Sue Barry,
who wrote Fixing My Gaze
about her experiences of going from a two-dimensional to a three-dimensional world.
go to see Avatar and can see just fine in three dimensions, but get
dizzy and feel as if they need to vomit. They're likely the same people
who felt that way while watching movies such as "The Blair Witch
Project" and "Cloverfield." That's called visual motion
hypersensitivity and for some can be resolved through other therapeutic