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Levofloxacin disposition over time in aqueous humor of patients undergoing cataract surgery
Federico Pea1, Ettore Ferrari, Federica Pavan
1Institute of Clinical Pharmacology and Toxicology, DPMSC, University of Udine, P. le S. Maria della Misericordia 3, 33100 Udine, Italy. federico.pea@med.uniud.it
Abstract:
The ocular disposition of levofloxacin in patients receiving two 500-mg oral doses 10 h apart before cataract surgery was assessed with the intent of defining drug ocular exposure over time. The mean aqueous humor concentrations persisted above 1.5 mg/liter between 1.5 and 6.0 h after the second dose, with average aqueous-to-plasma ratios ranging between 0.33 and 0.57. This favorable ocular disposition provides support for trials of systemic levofloxacin for prophylaxis of postoperative endophthalmitis in selected patients or as adjunctive therapy for the treatment of this potentially devastating infective complication.
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