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Devices designed to provide light illumination in an area distant from the device output port. These devices typically consist of a lamp fixture that may include a variety of light sources [e.g., , xenon, halogen, incandescent light emitting diodes (LEDs)] and a delivery system such as a fiberoptic cable; some battery-powered light sources may be attached to the proximal end of instruments (e.g., endoscopes) that include optical transmission capabilities. Light sources are mainly used in endoscopic and microscopic procedures performed for diagnosis, therapy, or surgery.
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