方法：计算机检索中文科技期刊数据库、万方数据库、中国知网学术文献网络出版总库及中文生物医学文献数据库。收集2004-01/2013-09发表的有关中国人群白内障结膜囊细菌培养的文献，并辅以手工检索、因特网搜索。并采用Meta分析对所纳入研究结果进行分析。

结果：共纳入7篇文献，共11499眼，白内障患者术前结膜囊培养阳性率为26.03%(2993/11499)，主要由G⁺球菌(86.40%)、G⁺杆菌(8.10%)、G^-杆菌(4.13%)以及G^-球菌(1.37%)构成。G⁺球菌主要以表皮葡萄球菌(67.30%)、金黄色葡萄球菌(12.53%)和微球菌(6.98%)为主。大多菌株对妥布霉素、万古霉素、环丙沙星和庆大霉素敏感，对妥布霉素和环丙沙星耐药性有上升趋势。

结论：白内障术前的结膜囊主要由表皮葡萄球菌构成，对青霉素和红霉素耐药，大多数菌株对妥布霉素、万古霉素、环丙沙星和庆大霉素敏感，对妥布霉素和环丙沙星耐药性有上升趋势。

METHODS: Database including the VIP Database for Chinese Technical periodicals, Wanfang database, CNKI and CBM Disc were searched to collect the relevant articles about bacterial culture and antibiotics sensitivity tests in conjunctival sacs of cataract patients in China before operation. The relative factors were analyzed by Meta-analysis.

RESULTS: A total of 7 reports with 11499 eyes were selected. The number of positive specimens of bacterial culture in non-infectious cataract patients before operation was 2993(26.03%)from 11499 specimens G⁺ C(86.40%), G⁺ B(8.10%), G^-B(4.13%)and G^-C(1.37%)constituted predominant bacteria in the conjunctive sac of cataract patients in China before operation, mainly staphylococcous epidermidis(67.30%), staphylococcous aureus(12.53%)and micrococcus(6.98%). Most of them were susceptible to tobramycin, vancocin, ciprofloxacin and gentamycin, and improved the tolerance of tobramycin and ciprofloxacin.

CONCLUSION: Staphylococcous epidermidis is the most frequent bacteria isolated in the conjunctival sac of eyes before cataract surgery. Most of themare susceptible to tobramycin, vancocin, ciprofloxacin and gentamycin, and improve the tolerance of tobramycin and ciprofloxacin.