What type of lens is used to correct myopia?

Myopia, commonly known as nearsightedness, is a condition where distant objects appear blurry while close objects can be seen clearly. To correct myopia, a concave lens is used. Concave lenses are thinner at the center and thicker at the edges, which diverges light rays before they enter the eye. This adjustment allows the light to focus correctly on the retina rather than in front of it, thereby improving vision for distant objects.

Other types of lenses serve different purposes; for example, convex lenses are used to correct hyperopia (farsightedness) by converging light rays, while plano lenses have no refractive power, meaning they do not correct vision. Bifocal lenses combine both distance and near vision corrections, but they are not specifically designed for correcting myopia. Thus, the use of a concave lens is the appropriate solution for individuals with myopia.