  In this paper, a study aimed at investigating the effects of real (using eye
tracking to determine the fixation) and simulated foveated blurring in
immersive Virtual Reality is presented. Techniques to reduce the optical flow
perceived at the visual field margins are often employed in immersive Virtual
Reality environments to alleviate discomfort experienced when the visual motion
perception does not correspond to the body's acceleration. Although still
preliminary, our results suggest that for participants with higher
self-declared sensitivity to sickness, there might be an improvement for nausea
when using blurring. The (perceived) difficulty of the task seems to improve
when the real foveated method is used.
