Most people with mild to moderate myopia, with mild astigmatism and some cases of presbyopia are good candidates for Ortho-K. Children over the age of 8 and young adults who want to be free of glasses and contacts but who are not good candidates for refractive surgery due to age or other reasons (i.e., severe dry eyes, high costs, health risks) often are good candidates. Those who lead active lifestyles and who participate in contact sports also benefit from Ortho-K.