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

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

	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*

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).

ISSN: 1743-0003