Individual difference in stereoscopic vision: the effects of inter-ocular distance and prior-experience

测试了眼间距（左右眼水平距离）对立体深度知觉的影响。我们问过了。50名观察者报告他们在随机点立体图中感知的深度大小。立体图有五种不同大小的双眼视差。刺激显示在计算机显示器上，并通过在固定的观察距离处的反射镜观察。用瞳孔距离计测量每个观察者的眼间距离。结果发现，眼间距离与深度知觉的平均大小呈负相关。此外，眼间距离和感知深度的标准差之间存在负相关。结果表明，视觉系统使用眼间距离信息来计算立体刺激中的深度大小。

The effect of inter-ocular distance (the horizontal distance between left and right eyes) on the stereoscopic depth perception was tested. We asked approx. 50 observers to report the size of depth they perceived in the random dot stereograms. The stereograms had five different sizes of binocular disparity. The stimuli were shown on a computer display and observed through an anaglyph at a fixed viewing distance. The inter-ocular distance of each observer was measured with a pupil distance meter. It was found that there was a negative correlation between the inter-ocular distance and the mean size of the perceived depth. Also, there was a negative correlation between the inter-ocular distance and the standard deviation of the perceived depth. The results suggest that the visual system uses inter-ocular distance information to calculate the size of depth in stereoscopic stimuli.