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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. Laval Agglomération et Conseil Général de la Mayenne This work was carried out with the financial support of Laval authorities (Laval Agglomération and Conseil Général de la Mayenne). Authors would also like to thank Dassault Systèmes for financial support (Passion for Innovation Programme), ENOZONE and EMISSIVE for development support, and all volunteers who gave their consent to carry out the experiments presented in this study.

International audience; Most of us do not know how a visually impaired person perceives andacts within the environment in everyday life. In this context, anexperimental study was conducted using a virtual reality simulation inwhich sighted people were immersed in low vision situations: blurredvision, tunnel vision, and central scotoma. After a brief familiarizationprocedure with a virtual reality tool called “SENSIVISE”, which includesa virtual apartment, 24 adults had to explore two rooms through lowvision simulation or full vision (as a control group) to identify theirlocation, and then were instructed to find particular targets. Perceptionand actions performances were measured in terms of time needed toanswer questions related to visual perception, and distances between theparticipants’ body and the screen. The results show that low visionsimulation impairs perception among sighted people. It was expressed bya statistically significant effect of lower times needed to execute taskscompared to the control condition. Consequently, the sighted individualsrealized how it is difficult to perceive and move when vision is limited.

Losing our relationship with our environmental conditions may reduce our cognitive abilities to understand them, and so to interact within. Through the SENSIVISE virtual space, we analyzed the perceptual abilities of 27 visually impaired people and 6 controls to perceive and interact while achieving requested tasks based on global or objects perception and recognition. We also tested the contribution of SENSIVISE's adaptations in improving performance and perception. Our results show a large variability of the performance among participants with low vision, according to visual deficiency, task features, and environmental conditions. Laval Agglomération et Conseil Général de la Mayenne Dassault Systèmes

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, 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 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 andmove when vision is limited. Authors would like to thank Dassault Systèmes for financial support (Passion for Innovation Programme), ENOZONE and EMISSIVE for development support, and all volunteers who gave their consent to carry out the experiments presented in this study.