 Scleral lenses may be used to improve vision and reduce pain and light sensitivity for people suffering from disorders or injuries to the eye, such as severe dry eye syndrome (keratoconjunctivitis sicca), microphthalmia, keratoconus, corneal ectasia, Stevens–Johnson syndrome, Sjögren's syndrome, aniridia, neurotrophic keratitis (anesthetic corneas), complications post-LASIK, high order aberrations of the eye, complications post-corneal transplant and pellucid degeneration.Injuries to the eye such as surgical complications, distorted corneal implants, as well as chemical and burn injuries also may be treated with scleral lenses.Soft lenses are often used in the treatment and management of non-refractive disorders of the eye.