Medical procedures require very special lighting. Surgical suites must be properly illuminated so that the surgical personnel may comfortably observe the surgical procedure. Specifically, medical procedures require a surgical light that is bright, essentially shadow free, and provides correct perception of the color of the tissues that are subject to the surgical procedure. Multiple light heads are often equipped in surgial illumination to accomplish these more demanding tasks involving broad illuminance. Headlights and fiber optic illuminated instruments are also employed sometimes as suplementary lighting sources to minimize shadows by moving the light to an axis closer to the surgeon's eyes or into the operative field itseif. The illumination requirements vary from lighting broad surface structures, to examining deep cavities with narrow openings, to endoscopic access. Dental operatory lights, for example, demand cool and color-corrected uniform illumination approaching pure white light comparable to sunlight with a color rendering index (CRI) of greater than 90, and over a sharply-defined target area. In an operation room, the surgical task area is highly illuminated by special ceiling-mounted task luminaires (adjustable-recessed and arm-mounted). Lighting devices are not only used to provide a desired pattern of illumination during medical procedures. Light, when delivered to the body, can stimulate a variety of biological activities in cells and tissues and has been shown to elicit a wide range of therapeutic effects. The light treatment may be applied solely for sterilization, bio-modulation, and photo-rejuvenation. Light, in the Ultraviolet (UV) spectrum, may be used as a treatment for skin disorders such as eczema, psoriasis, neonatal jaundice, rosacia, vitiligo, dermatitis, asteatotic, purigo, pruritis, etc. Find manufacturers and suppliers of LED procedure lights, diagnostic headlights, medical examination lights, dental operatory lights, medical penlights, wood's light, dental curing lights, and phototherapy lamps.