Fielmann AG engages in the operation of and investment in optical businesses and hearing aid companies. It also manufactures and sells visual aids and other optical products. It operates through the following geographical segments: Germany, Switzerland, Austria, and Other. The firm offers products such as glasses, frames, lenses, sunglasses, contact lenses, merchandise, hearing aids, and accessories. The company was founded by GÃ¼nther Fielmann on September 21, 1972 and is headquartered in Hamburg, Germany.