方法：对2010-12/2012-12在本院住院行白内障人工晶状体植入术的老年患者，分别于入院时、滴眼药水后、术眼准备后3个时间点，采集结膜囊标本进行细菌培养，并将培养结果与年龄、性别、眼别、职业、滴眼天数、干预方法等因素相关关系进行比较分析。

结果：年龄、性别、干预方法等因素对结膜囊细菌培养阳性率有显著性关联，职业、眼别、术前滴眼天数对结膜囊细菌培养结果影响不大。

结论：影响结膜囊细菌培养因素有患者自身因素，也有外部因素，干预方法对结膜囊细菌培养阳性率影响至关重要，应引起重视。

METHODS:Conjunctival sac specimen form senile patients, who received cataract crystal implantation from December 2010 to December 2012 in our hospital, were collected and cultivated at the following 3 time points: on admission day, after the eye-drops and after the surgical eye preparation. Afterwards, a comparative analysis was made in terms based on of the following factors: age, gender, dominant eye, occupation, days for eye-drops as well as the intervention techniques.

RESULTS: Factors such as age, gender, intervention technique were significantly related with the rate of bacterial culture, while factors such as occupation, dominant eye and days for pre-operative eye-drops had few effects on the final results.

CONCLUSION: There are both internal factors and external factors affecting the bacterial culture. Inconjunctival sac intervention techniques play a crucial role in the bacterial culture in conjunctival sac, which deserves more attention.