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  • Title: MICROBIAL SPECTRUM AND OUTCOMES OF ENDOPHTHALMITIS AFTER INTRAVITREAL INJECTION VERSUS PARS PLANA VITRECTOMY.
    Author: Garg SJ, Dollin M, Storey P, Pitcher JD, Fang-Yen NH, Vander J, Hsu J, Post-Injection Endophthalmitis Study Team.
    Journal: Retina; 2016 Feb; 36(2):351-9. PubMed ID: 26200514.
    Abstract:
    PURPOSE: To compare infectious organisms and visual outcomes of endophthalmitis after intravitreal injection (IVI) with endophthalmitis after pars plana vitrectomy (PPV). METHODS: Retrospective, comparative, consecutive case series of patients diagnosed with presumed infectious endophthalmitis after IVI of an anti-vascular endothelial growth factor medication or PPV between January 1, 2009, and October 1, 2012, from one center. Main outcome measures were infectious organism and final visual acuity. RESULTS: Forty-four cases of presumed infectious endophthalmitis (17 culture positive) occurred after IVI and 19 cases (9 culture positive) occurred after PPV. Of note, 56.3% of culture-positive IVI cases were due to bacteria associated with oral flora, primarily Streptococcus species, compared with none in the PPV group (P = 0.01). There was a trend approaching significance for IVI patients to have lost ≥3 lines of visual acuity compared with PPV patients at final follow-up (P = 0.07). Within the IVI group, patients were more likely to have lost ≥6 lines of visual acuity at final follow-up when endophthalmitis was due to an organism associated with oral flora (P = 0.007). CONCLUSION: Endophthalmitis after IVI has a higher likelihood of being due to oral flora compared with endophthalmitis after PPV. Among IVI patients, worse visual outcomes occurred when endophthalmitis was due to oral flora.
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