Recently, with the rapid progress in image processing and three-dimensional (3D) technologies, stereoscopic images are available not only on television but also in theaters and gaming consoles. Asthenopia and visually induced motion sickness (VIMS) are well-known phenomena, which are experienced by users while viewing video, playing immersive video games, and other such activities. In previous studies, we pointed out peripheral viewing as a pathogenesis of VIMS, the evidence of which was demonstrated and the anomalous sway was described using mathematical models. Moreover, stochastic differential equations can mathematically model the body sway phenomenon. In this study, we discuss the metamorphism in the potential functions to control the standing posture during exposure to stereoscopic video clips.