3D movies make some people sick, study says

Three dimensional movies are all the rage this summer, but while they may thrill some a new study says they may cause others to feel sick.

Researchers discovered viewers ages 24 to 34 were more likely to experience blurred vision and motion sickness than any other age group during a 3D movie.

The symptoms are related to a mismatch between focusing and converging the eyes. The symptoms are only temporary, but doctors recommend not sitting too close to the screen.

The study was published in the July issue of Optometry and Vision Science.