A STUDY ON THE DIFFERENCES IN VISION BETWEEN THE YOUNG AND THE ELDERLY IN SIGNS

It has been shown that with aging, cataracts become cloudy and colour perception and visual acuity deteriorate. As the world's population ages, there is a need for signage that considers older people's visual characteristics. This study aimed to clarify the effects of sign components on visual perception and identify differences in the effects of age. We conducted a psychological evaluation using the semantic differential method on 20 young and 10 elderly. The results showed that the younger participants gave higher ratings to many questions than the older participants. The factor analysis results showed that the items of the questionnaire consisted of a "visibility factor" and "harmony factor". The elderly were more likely to be affected by the viewing distance than the young invisibility.