Light therapy glasses aim to zap daytime fatigue in sleep apnea patients

This study tests whether wearing bright light therapy glasses can reduce daytime sleepiness and depressive symptoms in people with obstructive sleep apnea who still feel tired despite using their CPAP machine. Sixty participants will wear the glasses for four weeks of active treatment and four weeks of sham (inactive) treatment, in random order. The goal is to see if the light improves alertness and mood beyond what CPAP alone provides.