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随着科学技术的发展,电子计算机使用率不断提高,人们在工作和生活中使用视屏显示终端(Visual display terminal,VDT)的机会增多。VDT若设计不合理或使用不当,不仅会降低显示质量,而且会影响操作人员的身心健康。相关研究显示,VDT作业人员容易用眼过度,引起视疲劳、眼睛疾病等;长期从事VDT作业人员颈、肩、手腕和背等部位骨骼肌肉可能出现僵硬、酸痛等疲劳状况以及引起自主神经功能失调等。其中视觉系统功能改变是最突出的问题之一。
With the development of science and technology, the utilization rate of electronic computers is continuously increasing, and people have more opportunities to use VDTs at work and in their daily lives. Insufficient or improperly designed VDTs not only reduce display quality but also affect the operator’s physical and mental health. Related studies have shown that VDT operators are prone to overuse of the eyes, causing visual fatigue, eye diseases and the like. Long-term skeletal muscle involvement in the neck, shoulders, wrists and back parts of VDT operators may cause fatigue such as stiffness and soreness and autonomic nervous system dysfunction Wait. One of the most prominent problems is the change in the function of the visual system.