Keratoconus: Can it be treated?

Keratoconus occurs when the center of the cornea thins and gradually bulges outward, developing a rounded cone shape. This abnormal shape of the cornea causes moderate to severe blurring and distortion of vision. Mild vision problems can be corrected with eyeglasses. Moderate to severe cases of keratoconus may require specially fitted contact lenses to improve vision. In some cases, severe keratoconus may require a corneal transplant.