Light Therapy in End Stage Kidney Disease

Bright light treatment will consist of using the Re-timer device 3 times per week during dialysis sessions for 4 weeks. The Re-timer is worn like a pair of glasses and contains light emitting diodes mounted on the lower portion of the frame. The Re-timer emits blue-green 500 nm light with an intensity of \~500 lux lm/m2. Participants will be instructed to use the device for 60 minutes at the beginning of each dialysis session.

Dim light treatment will use non-light emitting glasses that look identical to Re-Timer for 4 weeks at each dialysis session following baseline assessments. Participants will use the device for 60 minutes at the beginning of their dialysis session.