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Table 1 The pupil parameters and the scores of questionnaire obtained before (control) and after presentation of movies A, D and R

From: A pilot study on pupillary and cardiovascular changes induced by stereoscopic video movies

  D1 [mm] D2 [mm] CR latency [msec] vc [mm/sec] vd [mm/sec] ac [mm/sec2] peak time [sec] score of questionnaire
Control 6.62 ± 0.89 5.25 ± 1.03 0.21 ± 0.07 303 ± 29 3.99 ± 1.29 1.14 ± 0.36 32.1 ± 11.3 1.10 ± 0.24 32.4 ± 10.2
movie A 5.95 ± 0.98** 4.48 ± 1.06** 0.25 ± 0.09* 304 ± 28 4.33 ± 1.27 1.14 ± 0.42 34.8 ± 12.7 1.10 ± 0.27 36.1 ± 10.3*
movie D 6.08 ± 0.92** 4.54 ± 0.93** 0.26 ± 0.08** 300 ± 32 4.35 ± 1.11 1.16 ± 0.48 32.3 ± 9.6 1.10 ± 0.20 38.0 ± 14.1**
movie R 6.15 ± 0.86** 4.77 ± 0.92** 0.23 ± 00.8 306 ± 33 4.02 ± 1.37 1.10 ± 0.43 32.2 ± 11.5 1.06 ± 0.18 36.7 ± 11.3*
  1. mean ± SD. D1: baseline pupil diameter just before light stimulation to induce the light reflex (mm), D2: pupil diameter at the peak of the light reflex (mm), CR: the amplitude of the pupillary light reflex (D1–D2) divided by D1, latency: the latency of the pupillary light reflex (msec), vc: the velocity of constriction (mm/sec), vd: the velocity of re-dilation (mm/sec), ac: the acceleration of the constriction (mm/sec2), peak time: time at the peak of the pupillary light reflex (sec), and the scores of the questionnaire. *, p < 0.05, **, p < 0.01. Paired t-test (two-tailed).