方法：对已经确诊的3 465例糖尿病患者进行系统的眼部检查，并对相关因素如患者的年龄、性别、居住地域、民族、糖尿病病程、空腹血糖、血脂及血压进行统计分析。

结果：本组3 465例糖尿病患者中，发生DR者1 079例，患病率为31.14%。患者的居住地域、糖尿病病程、空腹血糖水平、血压与糖尿病人群DR患者病率的差异有统计学意义(P<0.05)。年龄、性别、民族及血脂与DR患病率差异无统计学意义(P>0.05)。

结论：农村糖尿病人群DR患病率高于城市人群，DR的主要危险因素是糖尿病病程、血糖控制水平和高血压。

METHODS:Totally 3 465 patients with DM were studied, and the related factors such as patient's age, gender, region, race, diabetes duration, fasting blood glucose, blood lipid and blood pressure were analyzed.

RESULTS:Totally 1 079 patients(31.14%)were found with DR in 3 465 cases. The risk factors included the living region, diabetes duration, fasting blood sugar level and blood pressure(P<0.05).The age, gender, race and blood lipid were not risk factors for DR(P>0.05).

CONCLUSION:The living region, diabetes duration, fasting blood glucoselevel and blood pressure are risk factors for DR.