Combat the winter blues, circadian sleep disorders, jet lag, shift work adjustment and low energy with the Day-Light Classic therapy lamp. Healthcare professionals recommend bright light therapy as the #1 line of treatment for seasonal affective disorder (seasonal depression). Carex bright light therapy lights meet the guidelines set by the Center for Environmental Therapeutics. The Day-Light Classic lamp is the best on the market in treating Seasonal Affective Disorder, as it provides the maximum dose of 99.3% UV-filtered white light and projects light from above for effective therapy.