Defining the eye level coincides with the center of the display as a reference, the paper explores the influence of different visual distance to head joint comfort when the computer display center below/above the eye level.Experimental variable is visual distance(the visual distance between the eyes and display center).The dependent variable is head joint comfort.The experimental results show:(1)when the computer display center above the eye level, the head comfortable state is always in the uncomfortable( yellow) state;visual distance is proportional to the head of the human comfort, that is the bigger visual distance, the better human's head com-fort.(2) When the computer display center below the eye level, the head comfortable state is always in the nor-mal ( green) state, the bigger visual distance, the less human's head comfort.%以视平线可与显示器中心重合为准,分别探讨显示器中心在视平线上方、下方时不同视距对头部关节舒适度的影响. 实验自变量为视距(眼睛与显示器中心的水平距离),因变量为头部关节舒适度. 实验结果显示:1)显示器中心在人视平线上方时,头部舒适性状态始终处于不舒适状态,此时视距与人的头部舒适性关系成正比,即视距越大,头部舒适性越好;2)显示器中心在人视平线下方时,头部关节舒适状态始终处于正常范围,舒适性程度随视距增大而减小.
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