An electrically-powered ophthalmic magnification instrument, usually stereoscopic, designed for use in the operating room (OR) to magnify minute structures within the eye or its surroundings in the performance of ophthalmic surgical procedures which require high magnification by transmitted light. It is typically equipped with motorized focusing, adjustable magnification mechanisms (zoom), backup lamps, and inclined tubes that permit the surgeon to see the field from a vertical perspective while keeping the head erect. Dual or multiple observation capability and the optical integration of still, motion picture and video cameras are common features. It can be fixed or mobile.