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(A) Subjective sleepiness in summer (gray symbols; dashed line) and winter (black symbols; solid line); (B) subjective sleepiness relative to pre-light exposure for cataracts (upper graph) and pseudophakes (bottom) for both seasons separately; (C) relaxation and (D) physical well-being; (E) mood. *p < 0.05; mean ± SEM, n = 47.
