Concave Lens

A concave lens curves inward, like the inside of a bowl. For those with myopia, this can be critical. Myopia is an error of refraction of the eye in which near objects can be seen clearly while those in the distance appear blurred. This condition is commonly called nearsightedness, and is caused by the eye being too long from front to back. As a result, the corneal lens focuses images of distant objects in front of the retina. Glasses or contact lenses with concave lenses will correct the...