| Summary: | Abstract Currently, there is not enough design source material or research data on the needs of visually challenged people for adequate brightness in their day‐to‐day life. The purpose of this study, therefore, is to provide basic data on the lighting environment in architectural spaces to better understand the relationship between adequate brightness and contrast using a visual target and background. Within this context, under laboratory conditions, the authors have attempted to evaluate subjects and categorized their preferred level of brightness for an object into three categories, viz. barely visible, easily visible, and too bright and hardly visible.
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