Clinical study on risk factors of dry eye at north of Shan xi Province

Objective To study the risk factors of dry eye disease (DED) in the north of Shannxi Province. Methods A case-control study data of 147 patients with DED and 162 patients free-DED were analyzed using logistic regression. Results Univariate analysis showed that the constitu-ent ratio of long-term outdoor, long-term video, local administration, history of eye disese and alcohol consumption were higer on patients with DED than that in controls (P <0.05) .Logistics regression analysis showed that the constituent ratio of long-term outdoor, long-term video, local administration, history of eye diseases were independent risk factors for DED. Conclusions Long-term outdoor, long-term video, local administration, history of eye disease are risk factors for DED in the north of Shannxi Province. Key words: dry eye; risk factor; north of Shan xi Province