The presence of microbial organisms in conjunctival secretions always raises the doubt of whether they are the result of contamination or a real infection. Culture records of conjunctival secretion from children, who attended the Laboratory of Microbiology of the Instituto de Investigaciones en Ciencias de la Salud and the consulting roon of the Hospital de Clinícas from January 1990 to July 1992, were analyzed to determine the most frequent infectious agenis. The most commonly microorganism foud was Staphylococcus aureus (36.4 percent of the cases), followed by Streptococcus viridans (21.2 percent), Streptococcus pneumoniae (15 percent) pseudomonas aeruginosa (9 percent) and Neisseria gonorroheae (6 peecent). Nor Haemophilus influenzae neither fungi were detected