SUMMARY
Some ethiological aspects of corneal ulcers in 263 patients that were submitted to corneal culture in the Laboratório de Microbiologia Ocular da Escola Paulista de Medicina were analysed.
Positive cultures were obtained in 132 of the samples, where bacterias were isolated in 41,8% and fungy in 3,8%. Acanthamoeba sp. was isolated in 2 samples. Staphylococcus aureus was the most frequent bacteria isolated (22,1%) and among Gram negative bacteria, Pseudomonas sp. was isolated in 7,6%.
Comparing the results of this study with those performed before at the same laboratory, we demonstrate an increase of bacterial resistency to antibiotics like cefalotin, tobramicin and amicacin, while gentamicin keeps the some level of sensibility.