In the mildest form of keratoconus, eyeglasses or soft contact lenses may help. But if the disease progresses and the cornea thins and becomes increasingly more irregular in shape, glasses and soft contacts no longer provide adequate vision correction.
Optical treatments for moderate and advanced keratoconus include gas permeable (RGP or rigid) contact lenses and scleral and semi-scleral lenses. These lenses correct the keratoconic distortion and vault over the cornea, replacing its irregular shape with a smooth, uniform refracting surface to improve vision. Your tears fill in the space between the eye surface and the back of the contact lens to provide optimum vision.
Surgical treatments include collagen cross-linking, which is a new treatment designed to halt the progression of keratoconus. Other surgical options, such as corneal transplant, are only used if specially designed contact lenses do not provide satisfactory vision.