Abstract—It is generally explained to the public that accommodation and convergence are mismatched during stereoscopic vision and that this is the main reason for the visual fatigue and visually induced motion sickness (VIMS) caused by 3D viewing. The aim of this study was to 1) analyze the severity of motion sickness induced by viewing conventional 3D films on a liquid crystal display (LCD) compared to that induced by viewing the films on a head-mounted display (HMD) and 2) compare fixation distances between accommodation and convergence in middle-aged subjects while they viewed the abovementioned 3D films on the LCD with repeated measures. The results indicated that after 90 s of continuously viewing 3D images, the accommodative power does not correspond to the distance of convergence. Moreover, statistical comparisons revealed that viewing the 3D film on the HMD significantly affected body sway, despite a large visual distance.

Index Terms—3D video clips, visually induced motion sickness (VIMS), stabilometry, lens accommodation, convergence.

M. Takada and M. Satoh are with The Department of Physiology, Aichi Medical University School of Medicine, 1-1 Ganmata Yazako Nagakute, Aichi, 480-1195 Japan (e-mail: masumasu@aichi-med-u.ac.jp).
K. Uemoto and M. Miyao are with the Graduate School of Information Science, Nagoya University, Furo-cho Chikusa-ku Nagoya, Aichi, 464-8603 Japan (e-mail: mmiyao@is.nagoya-u.ac.jp).
Y. Matsuura is with the Headquarters for Innovative Society-Academia Cooperation, University of Fukui, 3-9-1 Bunkyo Fukui-City, Fukui, 910-8507 Japan (e-mail: matuura@u-fukui, ac.jp).
H. Takada is with the Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo Fukui-City, Fukui, 910-8507 Japan (phone: +81-776-27-8795; fax: +81-776-27-8420; e-mail: takada@u-fukui.ac. jp).

Cite: M. Takada, K. Uemoto, M. Miyao, Y. Matsuura, M. Satoh, and H. Takada, "Comparison of Fixation Distances in Middle-Aged Subjects," International Journal of Bioscience, Biochemistry and Bioinformatics vol. 2, no. 6, pp. 416-420, 2012.