The Bio-Brite Light Visor is the most convenient and efficient natural light supplement available today. It's extremely light-weight and comfortable, and completely portable. The Visor delivers glare-free light from above the eyes, and does not obscure vision nor interfere with normal activities such as reading, watching television, eating or exercising. It is powered by a small, rechargeable power pack so the user can be totally free to move about. The power pack's built-in timer and brightness controls let each user find the most effective light program.