Suzuki Yasuo, Onda Yoshinari, Katada Shusei, Ino Shuichi, Ifukube Tohru
Department of Ophthalmology, Sapporo Medical University, School of Medicine, Sapporo, Japan.
Jpn J Ophthalmol. 2004 Jan-Feb;48(1):1-6. doi: 10.1007/s10384-003-0001-7.
To investigate the effect on the human visual system of viewing 3-dimensional (3-D) computer graphics (CG) images with an eyeglass-free rear-cross-lenticular-type 3-D display.
Positive accommodation velocity (GRAD) during the accommodative step response was measured in ten healthy young adults before and after they viewed CG images. Although the distance between the viewer and the 3-D display was 600 mm, the apparent distance between the viewer and the virtual object was varied (515, 600, and 722 mm) by changing the visual disparity.
A significant slowdown of average GRAD was observed by 60 min after a 30-min 3-D viewing of 3-D CG images [P<0.05, analysis of variance (ANOVA)] but not after a 30-min viewing of the CG images on a 2-D display or after a 15-min 3-D viewing. When the virtual object was at 722 mm, a significant slowdown of average GRAD was observed only at 30 min after the 30-min 3-D viewing (P<0.05, ANOVA). When the virtual object was at 515 mm, a significant slowdown of average GRAD was observed at 30 and 60 min after the 3-D viewing (P<0.05, ANOVA).
The effect on the human visual system of 3-D viewing of 3-D CG images depends on both the duration of the viewing and the apparent distance between the viewer and the virtual objects.
研究使用无眼镜后交叉双凸透镜型三维（3 - D）显示器观看三维计算机图形（CG）图像对人类视觉系统的影响。
在十名健康的年轻成年人观看CG图像前后，测量其调节性阶跃反应期间的正性调节速度（GRAD）。尽管观看者与3 - D显示器之间的距离为600毫米，但通过改变视觉视差，观看者与虚拟物体之间的视在距离会发生变化（515、600和722毫米）。
在观看3 - D CG图像30分钟后的60分钟内，观察到平均GRAD显著减慢[P<0.05，方差分析（ANOVA）]，但在二维显示器上观看CG图像30分钟后或观看15分钟三维图像后未观察到这种情况。当虚拟物体位于722毫米处时，仅在观看3 - D图像30分钟后的30分钟时观察到平均GRAD显著减慢（P<0.05，ANOVA）。当虚拟物体位于515毫米处时，在观看三维图像后的30分钟和60分钟时观察到平均GRAD显著减慢（P<0.05，ANOVA）。
观看三维CG图像对人类视觉系统的影响取决于观看持续时间以及观看者与虚拟物体之间的视在距离。
