EVALUATION ON 3 DIMENSSIONAL IMAGE SYSTEM FROM VISUAL FUNCTION AND AUTONOMIC NERVOUS SYSTEM

我们从视觉功能和自主神经系统的角度研究了用双眼视差评价双眼立体图像系统的方法，视功能验光测试被认为是观看立体显示时视觉疲劳的客观评价方法。视觉功能的测试项如下：未矫正的视力。矫正视力；主观屈光、客观屈光、眼位、近视点、视觉调节能力、眼压、泪液。从视觉功能测试和访谈调查的结果来看，2D和3D显示存在较大差异。因此，视功能测试和访谈法都是评估对人眼影响的有效方法。我认为*e症状与视觉功能的变化密切相关，但很难在访谈中讨论视觉功能与症状之间的关系。从视觉功能的结果来看，三维显示影响了聚光、视距和视觉调节。据报道，收敛和调节同时发生，调节表现出不稳定的响应^5，收敛有时会中断^7。从这些实验结果来看，三维图像的重构位置诱导了调节和收敛。认为这种调节不稳定的现象会引起不适感和视觉疲劳。结果表明，改善视散度和视觉调节之间的不平衡可以减少不适感和视觉疲劳。采用视功能测试和访谈调查相结合的评价方法对分析立体成像系统对眼睛视功能和视疲劳的影响非常满意。视觉疲劳在观看立体图像时更为强烈。立体图像的调节和焦距变化幅度大于二维图像。影响视觉不适感和视觉疲劳的因素有3D表达方式和图像质量等诸多因素，但显示方式和图像质量的改进有望减少这些因素。少

We investigated the method to evaluate the binocular stereoscopic image systems using binocular disparity from the view point of visual function and autonomic nervous systemOptometric testing of visual function is considered to be suitable for objective evaluation of visual fatiguewhen viewing a stereoscopic display. The testing terms in visual function are as follows. Uncorrected visual acuity. Corrected visual acuity, . Subjective refraction, Objective refraction, Phoria (eye position), Near vision point, Ability of visual accommodation, Interocular pressure and Tear flow.From the result of the visual function test and interview investigation, there are large differences between 2D and 3D displays. Therefore, both the visual function test and interview method are valid for evaluating the influence on the human eye. I think that *e symptoms relate closely to the changes in visual functions, but it is difficult to discuss the relation between visual functions and symptom in interview i … More nvestigation clearly. From the results of visual function, it is indicated that 3D display affects vergence, phoria and visual accommodation. It is reported that the vergence and accommodation occurs simultaneously and accommodation shows unstable response^5, convergence break down sometimes^7. From those experimental results, accommodation and convergence are induced by the reconstructed position of a 3D image. And it is considered that this unstable phenomena in accommodation cause discomfort feeling and visual fatigue. It is suggested that the improvement in the imbalance between vergence and visual accommodation reduces a discomfort feeling and visual fatigue.The evaluation method using visual function test and interview investigation proved to be very satisfactory for analyzing the influence of stereoscopic imaging systems on the visual function and visual fatigue of eyes. Visual fatigue is more intense when viewing stereoscopic images. Change in accommodation and phoria of stereoscopic images are larger in magnitude than for two dimensional images. Many factors as 3D expression method and quality of image may affect discomfort felling and visual fatigue, but it is expected that the improvement in display method and image quality decrease those. Less