Action video games can sharpen eyesight: Study

Adults who play a lot of action video games may be improving their eyesight, US researchers said yesterday.

They said people who used a video-game training program saw significant improvements in their ability to notice subtle differences in shades of gray, a finding that may help people who have trouble with night driving.

"Normally, improving contrast sensitivity means getting glasses or eye surgery - somehow changing the optics of the eye," said Daphne Bavelier of the University of Rochester in New York, whose study appears in the journal Nature Neuroscience.