These include reading, use of any video screen (computer, iPad, iPhone, video games
), watching TV, going to movies. Discomfort can be helped a great deal by looking away from the screen and focusing on a distant object and blinking forcefully 8-10 times. Do this every 15 minutes during these activities. Because of the increasing amount of time young people are spending on computers/phones/tablets/videogaming there is an epidemic of dry eyes in young people: https://www.nbcnews.