The myopic (nearsighted) eye actually has too much focusing power. Either because the cornea is too curved, the eye is too long, or the eye lens focuses excessively, the incoming light is brought to focus in front of the retina. To counter this focusing error, the optometrist will prescribe corrective lenses designed to have the opposite effect. These prescription lenses will offset the eye’s overly high focusing power, thereby allowing light to focus on the retina as it should. Thus, it makes sense that lens prescriptions written for myopic individuals should have a minus (-) sign in front of the lens power. This written indication means that the lens is effectively reducing the eye’s excessive focusing power. People who are nearsighted often complain of headaches, eyestrain, squinting or fatigue when driving, playing sports, or looking more than a few feet away. Myopia can be easily diagnosed using standard eye exams given by an eye doctor. Nearsighted individuals often complain of headaches, eyestrain, squinting, or fatigue when driving, playing sports, or looking more than a few feet away.