Myopia
Short-sightedness, requiring a concave lens to focus the vision. Near-sightedness, an eye that is too powerful or too long. The image forms in front of the retina; a person with myopia thus sees badly in far vision but well in near vision. A Refractive Error in which the eye over-focuses light. Rays of light traveling from a distant object are brought to focus in front of the retina. Requires a minus (concave) lens to correct.