Abstract
This laboratory study evaluated the effect of task difficulty on discomfort glare. The results indicate that (1) as expected, discomfort glare was strongly influenced by glare illuminance, (2) an increase in the difficulty of gap- detection task resulted in an increase in discomfort glare and (3) the subjects with poorer overall gap- detection performance tended to assign more discomfort to the glare stimuli than subjects with better overall gap- detection performance. These results are consistent with the hypothesis that discomfort glare is related to task difficulty.