RubberElectrons beat me to it, but EyeMed Vision Care, LensCrafters, Pearle Vision, Sears Optical, Sunglass Hut, and Target Optical are all the same company, Luxottica.
Glasses from Armani, Brooks Brothers, Burberry, Chanel, Coach, DKNY, Dolce & Gabbana, Michael Kors, Oakley, Oliver Peoples, Persol, Polo Ralph Lauren, Ray-Ban, Tiffany, Valentino, Vogue, and Versace, are all from the same company, Luxottica.