The scleral lens is another option to consider for irregular cornea and other ocular surface diseases and disorders. Scleral lenses are highly oxygen-permeable rigid contact lenses that are larger than traditional rigid gas-permeable lenses. They are called scleral lenses due to the back surface of the lenses resting on the sclera rather than on the cornea. To most people’s surprise, scleral lenses tend to be very comfortable and can be a real solution to many patients who have been unsuccessful with other specialty contact lenses. To learn more about scleral lenses, click here: http://www.allaboutvision.com/contacts/scleral-lenses.htm