Skip to main content

Advertisement

Table 2 The values of visual performance indicator of Acuity C Test (Ŋ- accuracy C) and visual acuity before and after the intervention

From: The effect of increasing the illumination on operators’ visual performance in the control-room of a combined cycle power plant

Time Before intervention (Median ± IQR) After intervention (Median ± IQR) p-value*
Parameters
9:00 N = 16 Ŋ 0.33 ± 0.09 0.5 ± 0.12 < 0.001
Visual acuracy (\( \frac{1}{Arcmin} \)) 1.62 ± 0.34 1.84 ± 0.38 < 0.001
15:00 N = 16 Ŋ 0.22 ± 0.12 0.32 ± 0.11 < 0.001
Visual acuracy (\( \frac{1}{Arcmin} \)) 1.31 ± 0.56 1.52 ± 0.66 < 0.001
21:00 N = 16 Ŋ 0.33 ± 0.12 0.59 ± 0.1 < 0.001
Visual acuracy (\( \frac{1}{Arcmin} \)) 1.20 ± 0.41 1.51 ± 0.31 < 0.001
3:00 N = 16 Ŋ 0.25 ± 0.13 0.34 ± 0.13 < 0.001
Visual acuracy (\( \frac{1}{Arcmin} \)) 1.02 ± 0.24 1.23 ± 0.23 < 0.001
  1. *Wilcoxon Signed Ranks test