What is the world's largest eyewear company?
Luxottica Luxottica Group S.p.A. is the world's largest eyewear company. It is based in Milan, Italy.
Tamron Tamron Co., Ltd. (株式会社タムロン , Kabushiki-gaisha Tamuron ) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics. Tamron Headquarters is located in Saitama City in the Saitama Prefecture of Japan.