Fig 3 shows the microbiology findings of 45 postvitrectomy endophthalmitis patients. Culture results of 24 (53.3%) cases were found to be positive in our series. The culture proven rates were 55.0% for 20G and 40.0% for MIVS, respectively. The organisms isolated in the 24 culture-proven cases were, in decreasing frequency,: gram-negative organisms, 12/24 (50.0%); gram-positive organisms, 5/24 (20.8%); fungus, 4/24 (16.7%); P. acnes, 1/24 (4.2%); combined gram-negative and gram-positive organisms, 1/24 (4.2%); and combined bacterial and fungal, 1/24 (4.2%). The common organisms isolated in our case series were: Pseudomonas aeruginosa, 5/24 (20.8%); Staphylococcus epidermidis, 2/24 (8.3%); Staphylococcus aureus, 2/24 (8.3%); Aeromonas hydrophila, 2/24 (8.3%); Acinetobacter calcoaceticus, 3/24 (12.5%); and Aspergillus species, 5/24 (20.8%). In one case each, Enterococcus faecalis (4.2%), P. acnes (4.2%), Alcaligenes faecalis (4.2%), Corynebacterium (4.2%), Klebsiella ozaenae (4.2%), and Pseudomonas stutzeri (4.2%) was isolated.