Journal
CHRONOBIOLOGY INTERNATIONAL
Volume 33, Issue 1, Pages 134-139Publisher
TAYLOR & FRANCIS INC
DOI: 10.3109/07420528.2015.1119158
Keywords
eyewear; light pollution; sleep; eye fatigue; melatonin; Blue-light; retinal ganglion cells
Categories
Funding
- JIN CO LTD.
- Grants-in-Aid for Scientific Research [24570068, 24570069] Funding Source: KAKEN
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We investigated sleep quality and melatonin in 12 adults who wore blue-light shield or control eyewear 2 hours before sleep while using a self-luminous portable device, and assessed visual quality for the two eyewear types. Overnight melatonin secretion was significantly higher after using the blue-light shield (P < 0.05) than with the control eyewear. Sleep efficacy and sleep latency were significantly superior for wearers of the blue-light shield (P < 0.05 for both), and this group reported greater sleepiness during portable device use compared to those using the control eyewear. Participants rated the blue-light shield as providing acceptable visual quality.
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