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Evaluation of Visual Responses in Viewing a 3D Image  

Lee, Mu-Hyuk (Dept. of Optometry, Sunlin College University)
Son, Jeong-Sik (Dept. of Optometry and Vision Science, Kyungwoon University)
Kim, Jaedo (Dept. of Optometry and Vision Science, Kyungwoon University)
Yu, Dong-Sik (Dept. of Optometry and Vision Science, Kyungwoon University)
Publication Information
Journal of Korean Ophthalmic Optics Society / v.17, no.2, 2012 , pp. 165-170 More about this Journal
Abstract
Purpose: The aim of this study was to measure and evaluate changes of visual responses in viewing a 2D and 3D (three-dimensional) image. Methods: The subjects were 44 college students aged 19 to 25 years with normal binocular vision. The visual responses measured were CA/C (convergence accommodation/convergence) ratio, convergence-induced PD(interpupillary distance), accommodative responses, perceived distance in viewing a 3D image. Results: Convergence and accommodative responses in viewing the 3D image were significantly larger (p<0.05) than in 2D. A moderate positive correction was found between CA/C ratio and accommodative response (r = 0.477, p = 0.001). It was indicated that smaller PD had larger depth perception. Convergence in viewing the 3D image was significantly larger (p<0.05) than that at cognitive distance. Conclusions: The visual fatigue may be more intense in larger CA/C ratio and smaller PD when viewing 3D images.
Keywords
Convergence; Accommodative response; CA/C ratio; 2D; 3D; Image;
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