Here at the Eye on Optometry blog, you’ve already done some reading about OptomCAS, the Optometry Centralized Application Service, which you are required to use in order to apply to any of the 21 schools and colleges of optometry in the United States (and Puerto Rico) that are members of the Association of Schools and Colleges of Optometry (ASCO). While OptomCAS is a requirement for applying to be accepted into the Doctor of Optometry programs, it’s also a major help to you because it enables you to use a single web-based application and one set of materials to apply to multiple schools and colleges of optometry.