Keratoconus is an eye condition affecting about 1 in every 2000 people. This eye disorder results in the progressive thinning of the cornea, which leads to a cone shape of the eye. It is commonly referred to as causing irregular astigmatism. The cone-shaped cornea deflects light irregularly as it enters the eye causing distorted vision. Corneal shapes come in 3 basic forms: spherical, regular astigmatism, and irregular astigmatism. The analogy of each is as follows: a