The largest and clearest magnifier on the market features excellent image clarity, lighting control and energy efficiency. Our original Green-Lite! the Vision-Lite is the world's first and only dimmable fluorescent illuminated magnifier. - Patented" state-of-the-art microchip controlled ballast technology allows the Vision-Lite to be dimmable from 100% down to 25%, so that highly reflective surfaces can easily be seen by dimming the units exclusive high output three-sided bulb.