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Purpose Bright light sources, such as car headlamps or residential street lights, can cause visual discomfort. The origins of discomfort glare (DG) or the factors that contribute to it remain poorly understood, even after 50 years of multidisciplinary research [American Journal of Ophthalmology, 153(4):587‐593(2012)]. This study examined the effect of the light‐source intensity, size, surround luminance...
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