نبذة مختصرة : Purpose: The main objective of this study was to investigate the microbiological spectrum of endophthalmitis after anti- VEGF injections and to compare streptococcal with nonstreptococcus- associated cases with regard to baseline characteristics and injection procedure. Methods: Retrospective,international multicenter study of patients with culture-positive endophthalmitis after intravitreal anti-VEGF injection at 17 different retina referral centers. Results: Eighty-three cases with 87 identified pathogens were included. Coagulasenegative staphylococci (59%) and viridans streptococci (15%) were the most frequent pathogens found. The use of postoperative antibiotics and performance of injections in an operating room setting significantly reduced the rate of streptococcus-induced endophthalmitis cases (p = 0.01 for both). Conclusion: We found a statistically significant lower rate of postinjectional local antibiotic therapy and operating room-based procedures among the streptococcus-induced cases compared to cases caused by other organisms.
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