π ultraviolet keratitis
(Actinic Keratitis) Ultraviolet burns of the cornea are usually caused by use of a sunlamp without eye protection, exposure to a welding arc, or exposure to the sun when skiing (βsnow blindnessβ)
There are no immediate symptoms, but about 6β12 hours later the patient complains of agonizing pain and severe photophobia
Slit-lamp examination after instillation of sterile fluorescein shows diffuse punctate staining of both corneas
Treatment consists of binocular patching and instillation of 1β2 drops of 1% cyclopentolate (to relieve the discomfort of ciliary spasm)
All patients recover within 24β48 hours without complications
Local anesthetics should not be prescribed because they delay corneal epithelial healing