One hundred and fifty cases of corneal ulcers from the Government Ophthalmic Hospital, Madras, were investigated during 1980-1982 for the mycoflora. 68 cases (45%) were positive for fungi, comprising species of Aspergillus (36 cases), Penicillium, Fusarium (8 cases each), Curvularia (4 cases), Candida albicans and Mucor (3 cases each), Drechslera (2 cases) and Cladosporium, Cephalosporium, Pullularia, and Allescheria boydii (1 case each). Incidence of these fungi in mycotic keratitis is correlated with factors such as age, sex and occupation of the patients and is discussed in detail.