sigh..... I wish I could use the OTT Light..... I bought one a few years ago for my MIL ( back when they were first out.. paid BIG BUCKS for it too) She loved it!!!! From what I understand from my Opthamologist & Migraine Dr. These Ott lights give off a blue light , thus making it more like real sunlight... Herein lies my problem with the light. My eyes are sensitive to the Blue UV of natural sun light and the OTT lights... I Have to wear the Blue Blocker sunglasses if out side any length of time or I end up with a MEGA migraine. With in Minutes of being in the same room with MIL OTT light.. I have the beginnings of a migraine.... sigh..... I wish I wish... but I just can't... the migraines just make it impossible to tolerate.