目的：记录并调查某航空大学飞行学员在理论学习阶段对比度远视力以及用眼习惯，分析飞行学员对比度远视力变化情况与用眼习惯影响因素的关系。

方法：记录并分析某航空大学理论学习阶段一年级及二年级期末飞行学员对比度远视力，并采用问卷调查方式对用眼习惯进行记录分析。

结果：总计对117名一年级飞行学员、210名二年级飞行学员进行对比度远视力检查，其中双眼视力均在1.0以上者一年级为83人(70.9%)、二年级为174人(82.9%)(P<0.05)。对上述学员进行用眼习惯的问卷调查：一、二年级飞行学员每日阅读学习时间≤6h者分别为87.2%、93.3%，每日运动时间≤2h者分别为34.2%、13.8%，采用综合运动者分别为57.3%、90.0%，每日使用电子产品≤2h分别为38.5%、43.3%，夜间曾使用电子产品者分别为85.5%、75.7%，对健康用眼知识知晓情况分别为61.5%、81.0%(P<0.05)。

结论：航空大学理论学习阶段的飞行学员对比度远视力略有提高，主要与理论学习阶段阅读时间减少、户外运动时间增加、运动方式改善、电子产品使用时间减少及用眼知识加强因素相关。

METHODS: The contrast visual acuity of the students in Grade One and Grade Two at an aviation university was recorded and analyzed, and the visual habits were recorded and analyzed by questionnaire.

RESULTS: A total of 117 students in Grade One and 210 students in Grade Two were enrolled. The contrast visual acuity of both eyes over 1.0 were 83 students(70.9%)in Grade One and 174 students(82.9%)in Grade Two respectively(P<0.05). Questionnaire survey on the eye care habits by students, showing the second grade students of daily reading time, outdoor sports, sports category, use at night time, with a focus on electronic product knowledge and the degree of attention and when flying cadets were significantly different(P<0.05). There were 87.2% students of Grade One and 93.3% students of Grade Two taking less than or equal to 6h to get daily reading and learning time, 34.2% students of Grade One and 13.8% students of Grade Two taking outdoor sports less than or equal to 2h, 57.3% students of Grade One and 90.0% students of Grade Two taking more than One category of exercise,38.5% students of Grade One and 43.3% students of Grade Two using electronic production less than or equal to 2h, 85.5% students of Grade One and 75.7% students of Grade Two using electronic production at night, and 61.5% students of Grade One and 81.0% students of Grade Two paying high attention to the use of scientific knowledge(P<0.05).

CONCLUSION: The contrast visual acuity of Air Force pilot cadets keeps improving at theoretical study stage, mainly including the following reasons such as the decreasing of reading time, the increasing of outdoor sports, the improving of exercise methods, the reduce using of electronic production and the enhancing of eyes-using knowledge.