Systemic Moxifloxacin in Streptococcus viridans Endophthalmitis
Abstract
PURPOSE: To evaluate the effectiveness of prophylactic systemic moxifloxacin in a rabbit model of Streptococcus viridans (S. viridans) endophthalmitis.
METHODS: Animals (n=60) were divided into three groups. Intravenous moxifloxacin, vancomycin, normal saline was administered to 20 animals in each group and two hours later, 104 colony-forming units (CFU) of S. salivarius were intravitreally injected into the left eye. Intravenous antibiotics injection was repeated on days 1, 2, and 3 after inoculation. The clinical features, bacterial culture from vitreous aspirates of 10 eyes from each group were evaluated on days 1, 3, 5, and 7. On day 7, eyes for clinical feature examination were enucleated for histopathologic examination.
RESULTS: Clinical scores and log10CFU/ml values were lower in moxifloxacin group on all examination days. Histopathologic examination showed less inflammation and relatively well-preserved retina in the moxifloxacin group.
CONCLUSIONS: Systemic moxifloxacin may have a prophyactic effect for S. viridans endophthalmitis after intraocular procedure.
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