Table 3 Mean value and standard deviation for PLR parameters in dependence of red or blue light exposure during the PLR measurements
From: The pupillary light reflex (PLR) as a marker for the ability to work or drive – a feasibility study
| Flashgroup 1: red light | Flashgroup 2: blue light | |||||||
|---|---|---|---|---|---|---|---|---|
| Endpoint (mean, SD) | Base-line | Sleep deprivation | Alcohol exposure | p-value* | Base-line | Sleep deprivation | Alcohol exposure | p-value* |
| Initial diameter (pix) | 251.55 (51.17) | 253.63 (57.55) | 254.19 (54.61) | 0.64 | 233.91 (43.04) | 234.69 (47.45) | 235.63 (45.64) | 0.78 |
| Latency (ms) | 223.79 (24.05) | 226.38 (25.01) | 222.48 (22.19) | < 0.05 | 228.71 (20.5) | 227.46 (19.69) | 226.95 (19.33) | 0.09 |
| Acceleration (ms) | 244.13 (29.36) | 246.2 (31.25) | 244.99 (29.79) | 0.33 | 255.27 (28.36) | 255.59 (29.56) | 255.64 (28.61) | 0.86 |
| Contraction velocity (pix/ms) | 0.1061 (0.025) | 0.1081 (0.029) | 0.1091 (0.026) | < 0.05 | 0.088 (0.022) | 0.089 (0.024) | 0.087 (0.022) | < 0.05 |
| Quarter dilatation velocity (pix/ms) | 0.069 (0.015) | 0.068 (0.016) | 0.069 (0.015) | 0.13 | 0.064 (0.014) | 0.064 (0.015) | 0.063 (0.014) | < 0.05 |
| Half dilatation time (ms) | 451.06 (104.02) | 482.92 (116.76) | 483.09 (115.02) | < 0.05 | 360.5 (59.52) | 374.21 (61.07) | 367.33 (54.23) | < 0.05 |
| Line integral | 3524.51 (7.26) | 3535.35 (8.05) | 3525.08 (7.27) | 0.05 | 3524.51 (7.26) | 3535.35 (8.05) | 3525.08 (7.27) | 0.05 |