Prolonged topical or systemic use of corticosteroids in susceptible persons can cause a gradual reduction of outflow facility and an elevation of intraocular pressure. Eventually the optic disc will undergo cupping, and the visual field will become abnormal. The condition exactly mimics primary open-angle glaucoma and typically occurs in a patient who has been treated with topical corticosteroids for chronic blepharitis, allegic conjunctivitis, viral keratoconjunctivitis, recurrent uveitis, or postoperative inflammation.