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KMID : 1011420120170020165
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Journal of Korean Ophthalmic Optics Society
2012 Volume.17 No. 2 p.165 ~ p.170
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Evaluation of Visual Responses in Viewing a 3D Image
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Lee Mu-Hyuk
Son Jeong-Sik
Kim Jae-Do
Yu Dong-Sik
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Abstract
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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.
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KEYWORD
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Convergence, Accommodative response, CA/C ratio, 2D, 3D, Image
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