Effect of blue-blocking glasses in major depressive disorder with sleep onset insomnia: A randomized, double-blind, placebo-controlled study.

Abstract in brief

• This study investigated whether wearing blueblocking glasses in the evening could help improve sleep and mood in people with major depressive disorder (MDD) who also have trouble falling asleep.
• The research involved 20 participants who were randomly assigned to wear either blueblocking glasses or clear glasses (placebo) for two weeks, and their sleep and depression levels were measured before and after the intervention.
• The results showed no significant overall improvement in sleep quality or mood between the two groups, although some individuals wearing blueblocking glasses experienced better sleep, and there was a trend suggesting a shift toward a morning preference in the blueblocking group.]