Convex lenses are used in eyeglasses to treat farsightedness, a condition in which the distance between the lens of the eye and the retina is excessively short, causing the focal point to be behind the retina. Convex lenses increase refraction and, as a result, shorten the focal length of eyeglasses.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile