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http://dx.doi.org/10.15207/JKCS.2022.13.02.055

The Effect of Convergence Vision Therapy on VR Cybersickness  

Cho, Hyung-Chel (Department of Medicine, Graduate School, Kangwon National University)
Ro, Hyo-Lyun (Department of Physical-therapy, Kangwon National University)
Lee, HeeJae (Department of Pharmacology, School of Medicine, Kangwon National University)
Publication Information
Journal of the Korea Convergence Society / v.13, no.2, 2022 , pp. 55-65 More about this Journal
Abstract
The purpose of this paper was to investigate the relationship between cybersickness symptoms and visual function and to determine whether visual perception training is effective in reducing symptoms of cybersickness. The study subjects were healthy adult males who experienced the same virtual reality program for 15 minutes. Afterwards, the VR satisfaction score and cybersickness level were measured and classified into a comfortable virtual reality program viewer group (CVR group, 20 people) and an uncomfortable virtual reality program viewer group (UVR group, 20 people). Visual function test was performed on all subjects, and the vision therapy training program was applied to the UVR group once a week for 40 minutes 12 times, and then the visual function and SSQ questionnaire were re-evaluated. Subjects with diplopia were 55% in the UVR group and 5% in the CVR group, which was significantly higher in the UVR group, there were differences in stereopsis, exophoria, near point convergence(p<.01) and vergence function(p<.001) between the two groups. After vision therapy, changes in SSQ, stereopsis, near point convergence, and vergence function of UVR user group were positively changed(p<.01). Therefore, cybersickness symptoms are related to visual function, it seems that the vision therapy can be used as a way to alleviate the symptoms of cybersickness.
Keywords
Convergence; Virtual reality program; Sensory fusion; Cybersickness; Vision therapy;
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