http://www.keratoconusinserts.com/blog/?p=4451 | As we age, natural circumstances can lead to a decrease in our vision or cause other problems with our eyesight. While most people see an eye doctor to get prescription glasses or contact lenses to improve their vision, there has been little in the way of relief for those with Keratoconus. Keratoconus is a vision disorder that happens when the round cornea becomes thin and cone shaped. This condition prevents light that enters the eye from being focused properly, and it can alter vision.