了解军医大学学员在准分子激光原位角膜磨镶术（laser in situ keratomileusis,LASIK）术后4a干眼症高危人群的发病情况，为军校学员预防和治疗干眼症提供科学依据。 方法:对西安市第四军医大学口腔医学系2007级学员队165例实习生进行问卷调查，内容包括视力基本情况(标准对数视力表)和眼表疾病指数(参考美国OSDI评价表，包括光的敏感程度、异物感、酸痛感、近距离阅读、使用电脑情况以及所处的环境等）。将OSDI评分≥30分者定义为干眼症高危人群。 结果:被调查学员中干眼症高危率为24.2%，其中LASIK术后4a者干眼症高危率为51.7%，明显高于配戴框架式眼镜者22.4%(P<0.01)和正常视力者11.8%（P<0.01）。 结论:LASIK手术是引起干眼症的危险因素,因此对于军队院校学员近视眼准分子激光手术率较高的现象以及干眼症高危率的问题应特别关注

To evaluate the incidence of dry eye in the high risk group 4 years after laser in situ keratomileusis(LASIK) among the students of Military Medical University, and provide methods to support the prevention and treatments of dry eye for military academy students. METHODS:A questionnaire survey was conducted among 165 interns, the 2007 corps of the Department of Oral Medicine in Xian Tangdu Hospital, the Fourth Military Medical University. The questionnaire included Basic Vision and the Ocular Surface Disease Index (OSDI)（including eye sensitivity to light, foreign body sensation, sore, close reading, the use of computers as well as the environment and so on）.The OSDI score ≥30 points were defined as high risk of dry eye. RESULTS:Participants in the survey was 24.2% at high risk of dry eye. High risk of dry eye in those 4 years after LASIK was 51.7%, significantly higher than 22.4% in those who wore frame glasses and 11.8% in those who had normal vision. CONCLUSION: LASIK is a risk factor for dry eye. So the phenomenon for the military academy students with higher laser surgery rate and higher risk of dry eye should be particularly concerned.