采用透射式双变量对比视力表对398名现役健康男性军事飞行人员计796只眼，在200lx和6lX照度条件下检测了92％、52％、30％、11％和6％对比度兰道环视力，分析了对比视力值与年龄、机种、职务及飞行总时间的关系。结果表明：飞行人员的对比视力随年龄增长而逐渐降低，不随飞行训练时间的增加而相应提高，且不同的机种、职务间均无显著性差异。 A total of 396 active male military pilots, 796 eyes, were examined with a transmissive, two-variable contrast eye chart for 92%, 52%, 30%, 11%, and 6% contrast at 200 lx and 6 lX illuminance , Analyzed the relationship between visual acuity value and age, model, job title and total flight time. The results show that the contrast sight of pilots gradually decreases with age, and does not increase with the increase of flight training time. There is no significant difference between different models and positions.