Pupil changes at high altitude.

<p>Graphs represent the intraindividual changes in pupil parameters (expressed as normalized value to the baseline measurement before exposure, BL1) of the whole cohort (A1–E1; all graphs on the left side) and of the AMS+ respectively AMS− group (A2–E2; all graphs on the right side). The AMS+ group is represented by the black curve and the AMS− group by the gray curve. Displayed are the changes in initial diameter (A1, A2), amplitude (B1, B2), relative amplitude (C1, C2), latency (D1, D2) and contraction velocity (E1, E2). Data are depicted as mean normalized value ± the 95% confidence interval for each time point with * p<0.05; number of subjects: n = 14 (A1–E1) and n = 7 for AMS+ and AMS− group (A2–E2).