According to the American Optometric Association (AOA), computer vision syndrome affects more than 70% of the approximately 143 million Americans who use a computer on a regular basis (AOA). In fact, more than 90% of Americans say they spend more than 2 hours per day on digital devices. Adults aren't the only ones that are affected. Despite the fact that computer vision syndrome is most commonly connected with adult computer users, children may be more susceptible to the condition.