How Do Brightness and Glare Affect The Visually Impaired?

A recent study showed that most visually impaired participants required a higher degree of brightness in order to be able to  see the images they were presented on a monitor.  Surprisingly, though, about 25% actually saw better with lower brightness.  Most people had better vision with lower glare, and with more uniform lighting.  Also, visually impaired people did better with a higher degree of contrast between foreground and background colors.

An Investigation of the Implications of Visual Impairment for Illumination Requirements

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