OptomCAS is the centralized application service for the schools and colleges of optometry. OptomCAS is a service of the Association of Schools and Colleges of Optometry (ASCO) and is administered by Liaison International, an education information technology company located in Watertown, MA. OptomCAS allows optometry applicants to use a single web-based application and one set of materials to apply to multiple schools and colleges of optometry. Applicants who apply through OptomCAS submit a completed web-based application comprised of biographical data, colleges and universities attended, academic course history, letters of recommendation, work experience, extracurricular activities, honors, and a personal essay. It is the applicant’s responsibility to read and follow specific instructions for OptomCAS and the schools and colleges of optometry.