Impact of simulated low vision on perception and action
Résumé
Most of us do not know how a visually impaired person perceives and
acts within the environment in everyday life. In this context, an
experimental study was conducted using a virtual reality simulation in
which sighted people were immersed in low vision situations: blurred
vision, tunnel vision, and central scotoma. After a brief familiarization
procedure with a virtual reality tool called “SENSIVISE”, which includes
a virtual apartment, 24 adults had to explore two rooms through low
vision simulation or full vision (as a control group) to identify their
location, and then were instructed to find particular targets. Perception
and actions performances were measured in terms of time needed to
answer questions related to visual perception, and distances between the
participants’ body and the screen. The results show that low vision
simulation impairs perception among sighted people. It was expressed by
a statistically significant effect of lower times needed to execute tasks
compared to the control condition. Consequently, the sighted individuals
realized how it is difficult to perceive and move when vision is limited.
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