An operating room magnifier is adapted to utilize an operating room light source and may be sterilized to allow use on a sterile field. The magnifier comprises a base, a neck, and a lens frame. The lens frame holds a lens and receives a light connected to the light source, providing a light beam to an object held under the magnifying glass. The light source may be a known fiber optics light source commonly used in operating rooms, or a special dedicated light source. The magnifier is particularly useful in identifying microsurgical instruments.