Beauvaria bassiana keratitis.

The cornea of a 64-year-old white male underwent progressive thinning following removal of a foreign body and after treatment with topical antibiotics and corticosteroid. Initial attempts at laboratory identification of an infectious agent were negative. The process progressed to corneal perforation. After a penetrating keratoplaty, histopathological examination of host button tissue showed a fungus, identified as Beauvaria bassiana on culture.