What causes -inflammatory, progressive eye disorder affecting the anterior surface of the cornea. The cornea gradually thins, causing it to bulge into a cone-like irregular shape. Because the cornea is responsible for refracting most of the light that comes into the eye, any irregularity of the cornea can result in significant visual impairment, affecting the way they see the world. It is this irregular distortion of the cornea that makes vision correction with glasses less than optimal. For this reason, other means of correcting vision are often necessary. What causes Keratoconus? Keratoconus most often appears in a person’s late teenage years; although it…