Contrast sensitivity and the effect of 60‐hour sleep deprivation

摘要: Purpose The study aimed to evaluate the possible influence of prolonged sleep deprivation on achromatic and chromatic (red–green blue–yellow) contrast sensitivity (CS). Methods During 60-hr deprivation, CS was measured in 11 naval officers every sixth hour using videographic (Vigra-C) sine-wave-generated stimuli. Results When comparing measurements obtained first last 24 hr study, no statistically significant mean changes (2.0, 5.9 11.8 cpd) or yellow–blue (0.6, 2.0 4.7 cpd) were found, while a significantly increased red–green at 4.7 cpd recorded (p = 0.003 both). The variance group did not differ test periods. Conclusions Prolonged does apparently cause clinically occupationally otherwise healthy subjects with normal visual acuity.