Irregular corneas can be caused by a number of reasons including disease, trauma, corneal transplants and complicated laser surgery. Such patients can have considerably reduced vision that is not adequately addressed by standard contact lenses. Standard contact lenses and spectacles do not successfully address the complexities of an eye with an irregular cornea or keratoconus. Traditionally, patients with irregular corneas have been limited to gas permeable lenses which resulted in reduced wearing time for some patients.
