Topcon America Corporation the wholly-owned American subsidiary of Topcon Corporation, the world s leading manufacturer of surveying, ophthalmic, GPS and industrial instruments and positioning control products for the civil engineering and construction industries. Topcon America is a holding company that oversees general management, finance, legal issues and human resources for two separate business units in the Americas. These business units are Topcon Medical Systems and Topcon Positioning Systems. Topcon Medical Systems is a leader and technical innovator in the field of ophthalmic instrumentation. TMS manages ophthalmic dealer sales, corporate sales and the IMAGEnet Digital Imaging Division. The company is based in Paramus, N. J.