The OAT is a comprehensive exam that enables optometry education programs to assess the knowledge and preparedness of prospective optometry students. The four-part test is administered year-round by Prometric Test Centers in the U.S. and its territories, including Guam, Puerto Rico, and the U.S. Virgin Islands, as well as Canada.
The Association of Schools and Colleges of Optometry (ASCO) is the governing body for the OAT. The test is implemented by the Department of Testing Services (DTS), which is a shared service of the American Dental Association.