Optimizing Bright Light Therapy for Unipolar and Bipolar Depression Studying How It Works and Who Benefits Most A Multicenter Randomized Controlled Trial

What this Trial Is About

Researchers are studying Bright Light Therapy BLT to improve treatment for people experiencing depressive episodes, including unipolar and bipolar depression. The trial aims to optimize how BLT is given, understand how it works in the body, and identify which patients benefit most. It seeks to explore whether lifestyle changes and biological clock adjustments can enhance BLTs effects and develop a brain model to see how BLT influences the brain. Participants receive BLT using a 10,000 lux light lamp for 30 minutes each morning over 5 consecutive days. The treatment lasts between one and three weeks, depending on symptom improvement. Patients are randomly assigned to one of three groups receiving BLT at home following standard guidelines, receiving BLT in a specialized caf that promotes lifestyle and social interaction with fixed daily timing, or receiving BLT in the caf with varied timing plus wearing blue light blocking glasses in the evening. Before, during, and after treatment, participants wear devices to monitor sleep, activity, and light exposure. They also complete frequent mood and vitality questionnaires via smartphone. Researchers assess clinical and biological factors that may predict treatment response, including brain scans for functional and structural changes. The study includes a baseline phase up to two weeks, a treatment phase up to three weeks, and a three-month follow-up to evaluate clinical improvement and other outcomes.

BioClock: Bright Light Therapy for Depressive Disorders