Abstract
Objective: Investigate differences in visual perception of elderly people, comparatively to people of lower age group in relation to hollow-face illusion. Methods: A pre-experimental design of comparison with a static group was used. The samples were selected accidentally. 42 elderly people and 73 people of younger age participated. The concave mask was binocularly presented to the participants at a distance of three meters and in two lighting conditions: above and below. Data analysis was carried using a statistical software and the considered level of significance was 5%. The study was approved by the Ethics Committee. Results: There were no significant differences between the groups in the first indicator of visual depth perception (concave or convex), regardless of lighting condition (above, p = 0.26; below, p = 0.37). In the second indicator (categorical judgment), there were no significant differences between the groups (above, p = 0.97; below, p = 0.26). In the third indicator (metric estimate), the results were similar (above, p = 0.48; below, p = 0.67). Conclusion: People in the younger age group, as well as the elderly, were susceptible to hollow-face illusion.