中文摘要：

目的：了解黑龙江省农村地区翼状胬肉的患病率及相关危险因素。方法：以人口为基础的横断面研究,在黑龙江省明水县整群随机抽取35个行政村为调查点,抽取50岁以上人群共6 196名作为调查对象。研究该人群分布特征和翼状胬肉的患病率、分布特征、危险因素。结果：在50岁以上人群中,实际接受检查5 669名,受检率91.49%。发现翼状胬肉患者246例329眼,至少有1眼患病的患病率为4.34%;翼状胬肉的患病率与年龄正相关（年龄每增加10岁,OR=1.616,95%CI：1.372~1.903,P〈0.01）;Logistic回归分析结果表明,外出不配戴眼镜与配戴眼镜相比,OR=5.045,95%CI：1.592~15.985,P=0.006;平时工作活动地点在室外与室内工作者相比,OR=3.896,95%CI：2.834~5.356,P〈0.01;平时外出或室外娱乐的时间〉4h与〈4h相比,OR=1.410,95%CI：1.064~1.869,P=0.017;翼状胬肉的发生与年龄、是否配戴眼镜、户外工作的时间相关。结论：在高寒地带的黑龙江省农村地区翼状胬肉患病率有所下降。高龄、户外工作是其危险因素,而外出时配戴眼镜是其保护性因素。

英文摘要：

AIM ： To estimate the prevalence and related risk factors of pterygiumamong the middle- aged and the senile in the defined rural area of Heilongjiang. METHODS： Population- based cross- sectional study.A total number of 6 196 subjects aged 50 years or older in35 villages in M ingshui District of Heilongjiang was studied,using cluster randomsampling methods. The prevalence of pterygium, distribution patterns and risk factors in this population were studied.RESULTS： There were 5 669 subjects（ 91. 49%） actually received the examination and 246 patients（ 329 eyes） were found among the population aged 50 years or older. The prevalence of pterygiumwas 4. 34%. The prevalence of pterygiumwas positively correlated with age（ for every10 a of age,OR = 1. 616,95% CI： 1. 372- 1. 903,P〈0. 01）.Logistic regression analysis showed： non- glasses vs wearing glasses when been outdoors（ OR = 5. 045,95% CI ：1. 592- 15. 985,P = 0. 006）; outdoor workers vs indoor workers（ OR = 3. 896,95% CI： 2. 834- 5. 356,P〈0. 01）.Pterygiumwas related to the age,glass- wearing and times working outdoors. CONCLUSION： In the alpine, rural area ofHonglongjiang,the prevalence of pterygiumis decreased.Old age and outdoor work are the risk factors, while wearing glasses when going out is a protective factor.