微光夜视镜对深径觉的影响及夜视深径觉体验训练的作用

Influence of night vision goggles on depth perception and the value of depth perception training

目的 研究微光夜视镜对深径觉的影响及夜视深径觉体验在改善深径觉中的作用。方法 在暗室内,应用微光夜视镜、深径觉体验和测量控制装置等设备,对113名健康男性志愿者的暗环境裸眼深径觉及佩戴夜视镜后的深径觉进行体验及测量,重复3次,进行差异性分析,确定佩戴夜视镜对深径觉的影响,并通过方差分析,确定不同测量次数对深径觉测量结果的影响,明确深径觉测量与训练装置在改善深径觉中的作用。结果 暗室内,受试者裸眼深径觉3次试验结果分别为(62.55±64.70)mm、(39.83±42.55)mm和(39.50±42.89)mm;佩戴夜视镜深径觉3次试验均值分别为(98.29±83.74)mm、(63.22±60.29)mm和(65.50±69.69)mm;与裸眼深径觉相比,佩戴夜视镜深径觉明显变差(P<0.05)。与第1次测量结果相比,不论是裸眼还是戴镜后深径觉第2、3次测量结果均明显改善,差异具有统计学意义(P<0.05)。结论 佩戴夜视镜时,人眼深径觉会明显变差,但经过多次体验后,由于经验累积,深径觉能力会大幅增强。在戴镜执行夜间飞行任务前,有必要对飞行员进行戴镜深径觉测量与体验。

Objective To study the influence of night vision goggles(NVG)on depth perception and the role of depth perception training in improving depth perception.Methods The naked and NVG depth perception of 113 healthy male volunteers was tested using facilities for depth perception measurement and NVGs in a dark room.The measurements were repeated three times.Differential analysis was conducted of naked and NVG depth perception.Variance analysis was used to determine the influence of the number of times of measurement on the results of depth perception.Results The results of 3-time measurements of naked depth perception were(62.55±64.70)mm,(39.83±42.55)mm and(39.50±42.89)mm respectively,compared with(98.29±83.74)mm,(63.22±60.29)mm and(65.50±69.69)mm for NVG depth perception.The results of 3-time measurements of NVG depth perception were significantly worse(P<0.05).The results of the second and third measurements were significantly improved compared with the first one(P<0.05),involving both the naked and NVG depth perception.Conclusion Depth perception with NVGs is significantly worse than naked perception,but it can be enhanced after experience is gained.Pilots need to experience depth perception with NVGs and their depth perception should be evaluated before night flight missions.