Change in fusional range after watching stereoscopic HDTV

Abstract

To investigate visual fatigue and loads in watching a stereoscopic television, we studied the changes in visual functions, especially fusional range and AC/A ratio after watching stereoscopic High Definition TV. The results showed that after 1 hour's watching two dimensional HDTV, subjects' fusional ranges showed no significant change, while after 1 hour's watching stereoscopic HDTV, they showed significant change and restored after rests. It showed no significant change in AC/A ratio. It also showed that subjects who can perceive a stereogram by freefuse have wider fusional range than subjects who cannot.