https://www.selleckchem.com/pr....oducts/agi-24512.htm
OBJECTIVES Recent studies have suggested that evening blue light exposure is associated with sleep and circadian rhythm abnormalities. This study examined the effect of blue-blocking (B glasses on sleep and circadian rhythm in patients with bipolar disorder (BD). METHODS We used a randomized, placebo-controlled, double-blinded design. Outpatients with BD and also with insomnia were randomly assigned to wear either orange glasses (B or clear ones (placebo) and were instructed to use these from 2000 hours until bedtime for 2 weeks.