Infectious crystalline keratopathy occurring in an eye subsequent to glaucoma filtering surgery with postoperative subconjunctival 5-fluorouracil.

We present a case of infectious crystalline keratopathy occurring after 5-fluorouracil filtering surgery. The patient had discrete, branching, white crystalline lesions in the anterior corneal stroma. Cultures grew Streptococcus viridans, and gram-positive cocci were demonstrated in corneal tissue biopsy specimens. Toxic and immunosuppressive properties of 5-fluorouracil may have participated in the pathogenesis of the infectious crystalline keratitis.