About us Peter and Susan Diguer founded OPSG in 1993. This full-service operation is run from a clean, modern facility on Oxford Street in London, Ontario. OPSG prides itself on the reputation for high standards and quality production that it has maintained over the last 13 years of operation. OPSG consider themselves an extension of your business by understanding and adapting to the ever-changing needs of your practice. Everyone works together at OPSG to create a work environment that is friendly, co-operative, and respectful while remaining profitable and efficient. OPSG looks to their reputation for service and quality as well as the skill and dedication of their staff to face future challenges and promote positive growth within the Optical Industry.