In what year did the world's largest eyewear company based in Milan, Italy acquire a controlling interest in OPSM (Optical Prescription Spectacle Makers)?
OPSM:  Italian eyewear giant Luxottica acquired a controlling interest in 2003. Luxottica: Luxottica Group S.p.A. is the world's largest eyewear company. Luxottica:  It is based in Milan, Italy.
2003