Worried that your kid's eyesight might deteriorate because of endless hours spent on smartphones, gaming consoles, computers and tablets? Take heart, spending just two hours a day outdoors, playing any sport in the sunlight, might help, experts suggest. Myopia -- also known as nearsightedness and shortsightedness -- is a condition of the eye where the light that enters the eye does not directly focus on the retina, but in front of it.