Persons who have keratoconus should not be treated with radial keratotomy (RK), astigmatic keratotomy (AK), automated keratomileusis (ALK) or laser in-situ keratomileusis (LASIK), as these surgical procedures will have poor outcomes from persons with keratoconus. All nearsighted patients considering PRK or LASIK should have screening with corneal topography to rule out early forms of keratoconus.