Useful visual field at a homogeneous background for old and young subjects
N. Itoh, K. Sagawa, Y. Fukunaga
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AbstractThe study investigates age-related changes of the entire visual field. The useful visual field was measured with 2 or 4 degrees visual angle target disks of different luminance contrast (experiment 1: n=98) or color (experiment 2: n=95), against a homogeneous background. Methods A ‘change-blindness’ method was adopted to avoid effects of sudden target onset. Screen sizes were 4 m (width) by 2.6 m (height), corresponding to visual angles of 120 deg (horizontal) and 100 deg (vertical). Results In all experiments, older subjects showed a smaller size of the useful visual field. Conclusion The results have design implications for presenting visual information used by older adults in daily life such as road signs and destination labels of trains.Keywords: useful visual field; aging; eccentricity; luminance; color
N. Itoh, K. Sagawa, Y. Fukunaga (2009). Useful visual field at a homogeneous background for old and young subjects. Gerontechnology, 8(1), 42-51
https://doi.org/10.4017/gt.2009.08.01.010.00