Playing first-person shooters can enhance visual acuity, according to researchers at the University of Rochester.
As reported by Scientific American:
[Research subjects] who played the action-packed video games such as Unreal Tournament 2004 by Atari and Call of Duty 2 by Infinity Ward experienced an improvement in contrast sensitivity, while those playing The Sims 2 by Electronic Arts did not.
The latest research stands out from the previous experiments because contrast sensitivity is something that people thought could not be changed naturally, [Prof. Daphne] Bavelier says… Games that best improved contrast sensitivity were those that were unpredictable and required the player to aim at different targets, quickly deciding friend from foe before firing their weapon. "You always need to be alert and analyze what’s going on," she adds…
Prof. Bavelier hopes to use the research to help those who suffer from amblyopia , also known as "lazy eye."