William D. Greer

Evolved Digital Systems Inc. develops and manufactures medical imaging systems. The company principal activity is provides IT services to clients in the healthcare industry, specifically focusing on those in cardiology and radiology. The company was founded on September 23, 1987 and is headquartered in Quebec, Canada

Ophthalmic Imaging Systems, Inc. manufactures ophthalmic digital imaging systems. Its principal activity is to design, develop, manufacture and market digital imaging system, image enhancement and analysis software and related products and services used by the practitioners in the ocular healthcare field. The current flagship product in the Group's angiography line is its digital imaging systems. Its products include WinStation systems, Digital Fundus Imager, Digital Slit Lamp Imager and Slit Lamps. Retina specialists and general ophthalmologists use the WinStation systems. The company was founded on July 14, 1986 and is headquartered in Sacramento, CA.

Evolved Digital Solutions, Inc. develops and provides diagnostic radiology imaging equipment and services. The company is based in Brentwood, TN. Evolved Digital Solutions was acquired by Evolved Digital Systems, Inc. on October 15, 2003.