People who have a hard time seeing traffic lights or cars at night, who miss facial gestures, or who need a great deal of light to read typically suffer from poor contrast sensitivity. This condition is thought to be correctable by wearing glasses or contact lenses or by surgery. Now, researchers say they may have found a way to improve contrast sensitivity naturally with the help of an unlikely source—video games. According to a study published in Nature Neuroscience, playing action video games could help improve