Cases of myopia, or short-sightedness, are increasing rapidly around the world, and a new study suggests that our modern tendency to spend more time indoors could be a key driving factor. While we still don't know exactly what is behind the rise in myopia, the work by researchers from the State University of New York (SUNY) College of Optometry suggests that it's not just about screen time . The SUNY team ran lab tests on 34 volunteers, 21 with myopia (myopes) and 13 with normal vision (