Blue Light Blocking Glasses Fail to Reduce Sleepiness and Fatigue in Night-Shift Workers
Blue light blocking glasses showed no significant reduction in subjective sleepiness or fatigue compared to control glasses in a study of 50 night-shift healthcare workers over three weeks.
- Randomized controlled trial with 50 night-shift healthcare workers over 3 weeks, using placebo-controlled glasses.
- No significant differences in subjective sleepiness or fatigue between blue light blocking and control groups.
| Metric | Scientific Observation | Impact Magnitude | ||
|---|---|---|---|---|
| Subjective Sleepiness | No significant reduction vs. placebo | 0% difference | ||
| Fatigue Levels | Remained similar between groups | No improvement | ||
| Sleep Quality (Actigraphy) | No enhancements observed | Equivalent to control |