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Research Library

The HMinfo Research Library contains an in-depth collection of materials on home modifications and related subjects.

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Object Perception By Visually-Impaired People At Different Light Levels

Vision Research

Author: Cornelissen, F. W., Bootsma, A., Kooijman, A. C.
Type: Journal Article
Year: 1994


The authors investigated the relationship between the illumination level and the ability of visually impaired subjects to detect and recognize objects in a realistic visual environment. Subjects often continued to show substantial improvement at light levels where normal subjects have reached maximum performance. Integrated contrast sensitivity, a summary measure for the contrast sensitivity function, was better at predicting performance than either visual acuity or peak contrast sensitivity. However, when combined, the latter two predicted performance as well as the former, We conclude that when we try to find the best illumination for orientation and day-to-day activities we should optimize it for both visual acuity and contrast sensitivity.

Further Details

Publish Dates: Jan
Pages: 161-168
Volume: 35
Issue: 1
Accession Number: 05.12.05
Keywords: lighting, mobility, vision, research
Reads: 175