美国ＦＤＡ批准Ｓａｎｔｅｎ公司的抗感染药氟喹诺酮类眼用制剂Ｑｕｉｘｉｎ（０．５％左氧氟沙星溶液剂），治疗细菌性结膜炎。左氧氟沙星在中性ｐＨ的溶解度很好，因而与其他氟喹诺酮类相比，可配制具有较高的活性药物浓度（０．５％对０．３％）的眼用制剂。本品预计今年年 The U.S. FDA approved Quixin (0.5% levofloxacin solution), the Sanofi’s antifungal fluoroquinolone ophthalmic preparation, for the treatment of bacterial conjunctivitis. Levofloxacin has a very good solubility at neutral pH, so ophthalmic formulations with higher active drug concentrations (0.5% vs. 0.3%) can be formulated compared to other fluoroquinolones. This product is expected this year