Methods:Gatifloxacin eyedrops was prepared with benzalkonium as bacteriostat,NaCl as osmotic-pressure regulating agent and PVP as thickener:The content was determined with HPLC.

• 方法:以苯扎溴铵为抑菌剂,氯化钠为渗透压调节剂,聚乙烯吡咯烷酮(PVP)为增黏剂,制备加替沙星滴眼剂;采用高效液相色谱法测定含量。