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The time course of changes in the (A,C) upper and (B,D) lower eyelid skin temperature and blood flow after the application of warmed and room temperature devices for 5 min. The solid line indicates the warmed device; the dashed line indicates the room temperature control device. The error bars represent the standard deviations of the subjects. * p < 0.05 (Dunnett test), ** p < 0.01 vs. before device application.
