Philip?s Burton UV (Woods) Lights is the most universally accepted light for diagnosing disease and injuries to the skin and eye. It is designed for a variety of uses and are offered in models with magnifiers and white lights to best suit various medical needs. Common diagnostic applications includes corneal scratches, foreign bodies in the eye, blocked tear ducts, contact lens placement and fungus infections. With handheld flexibility, large magnification and a five-year limited warranty, this UV light provides great value for any facility. Main Features include: Special fluorescent bulbs produce UVA at approximately 365 nm wavelength, 4-light magnifier models include optically ground and polished glass 5-diopter magnifier lens with 2.25X total power magnification and focal length of 8? (20 cm), 6000-hour average bulb life and 120V model standard (230V/240V models available).