What is light therapy, and is it safe?
Light therapy, sometimes called phototherapy, is administered by a device that contains white fluorescent light tubes covered with a plastic screen to block ultraviolet rays. The intensity of light emitted (Lux) should be at least 10,000 Lux. The patient does not need to look directly into the light, but reads or eats while sitting in front of the device at a distance of 2 to 3 feet. Light therapy is safe and generally well tolerated.
