- Uncommon, non-contagious, primary corneal inflammation of unknown etiology.
- Patients usually present with bilateral keratitis
- Characteristic remissions and exacerbations of tearing, foreign body sensation, and photophobia over several years.
- Superficial coarse, punctate, discrete gray epithelial opacities which protrude into the tear film
- More often located centrally
- Usually remain for several weeks to several months and eventually fade
- The conjunctiva is not involved.
- Mild symptoms may be treated with simple lubricants.
- Low dose corticosteroids and topical cyclosporine are usually effective to reduce the duration of the recurrence.