Which type of lens is used to correct myopia?

Concave lenses are specifically designed to correct myopia, which is also known as nearsightedness. In myopia, distant objects appear blurry because the eye is either too long or the cornea has too much curvature, causing light rays to converge at a point in front of the retina. Concave lenses, which are thinner in the center than at the edges, diverge incoming light rays. This divergence shifts the focal point further back onto the retina, allowing the person to see distant objects more clearly.

Each of the other lens types serves different purposes. Convex lenses, for instance, are used to correct hyperopia (farsightedness) by converging light rays, which is the opposite effect needed for myopia. Aspheric lenses are designed to reduce aberrations and improve visual quality but are not specifically aimed at correcting myopia. Multifocal lenses assist people who require correction for both near and far vision but do not specifically target myopia correction on their own. Thus, concave lenses are the correct choice for addressing myopic conditions directly.