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由于机车乘务人员在操纵运行机车的过程中,需要瞭望远方行车信号、观察司机室内各种仪表和信号指示器、查阅和记录运行资料等,故要求迅速、准确的掌握综合性行车情报,这就需要机车乘务人员要有良好的远、中、近全面的中心视力状态。有关机车乘务人员不同视距离视力的研究,虽然国外进行了一些工作,但上千例大样本的正常值报道尚未见到。国内虽然关于国人视力正常
As the locomotive crew in the operation of running the locomotive, the need for long-distance traffic signals, observing the driver’s interior various instruments and signal indicators, access and record the operating information, it requires prompt and accurate grasp of comprehensive driving information, which Need locomotive crew to have good far, medium and near comprehensive central vision. Regarding the study of locomotive flight crew with different visual range of eyesight, although some work has been done abroad, the normal reports of thousands of large samples have not been reported yet. Although the domestic eyesight on normal people