The Efficacy and Feasibility of Bright Light Therapy in Adolescents With Depressive Disorder

"In this study, we will utilize the optocoupler-controllable light source, a product jointly developed by the School of Physics at Peking University and Peking University Sixth Hospital, which granted a national patent in China, for the purpose of intervention.~Participants randomly assigned to the high light density intervention group will receive bright white light therapy interventions with light intensities of 10000 lux, and the main wavelength of light source is 476.4nm. The intervention plan is to receive 40 minutes of light therapy from 7:00-9:30 in the morning for 4 consecutive weeks, 6 days a week. The subject sits at a distance of 60cm from the light source."

In this study, we will utilize the optocoupler-controllable light source, a product jointly developed by the School of Physics at Peking University and Peking University Sixth Hospital, which granted a national patent in China, for the purpose of intervention. Participants randomly assigned to the low light density intervention group will receive bright white light therapy interventions with light intensities of 5,000 lux,and the main wavelength of light source is 476.4nm. The intervention plan is to receive 40 minutes of light therapy from 7:00-9:30 in the morning for 4 consecutive weeks, 6 days a week. The subject sits at a distance of 60cm from the light source.

In this study, participants randomly assigned to the placebo-controlled group will receive dim red light therapy interventions with light intensities of 100 lux, and the main wavelength of light source is 690.4nm. The placebo-controlled intervention plan is to receive 40 minutes of red light therapy from 7:00-9:30 in the morning for 4 consecutive weeks, 6 days a week. The subject sits at a distance of 60cm from the light source.