The Optometry Centralized Application Service (OptomCAS®) is the centralized application system for optometry schools in the United States, managed by the Association of Schools and Colleges of Optometry (ASCO®). OptomCAS® streamlines the application process by allowing you to submit a single application to multiple programs. This guide covers the complete application process, including the timeline, prerequisites, required components, and strategies for presenting a competitive application.
Application Timeline
The OptomCAS® application cycle typically opens in late June or early July for programs beginning the following fall. Deadlines vary by program, with some as early as November and others extending into March or later. Many optometry programs use rolling admissions, so earlier submission is advantageous. We recommend having your application materials prepared before the cycle opens so you can submit within the first few weeks. Create a timeline that accounts for transcript processing, OAT® score reporting, and letter of recommendation submission to avoid last-minute delays.
Prerequisites for Optometry School
Most optometry programs require the following prerequisite courses: general biology (two semesters with lab), general chemistry (two semesters with lab), organic chemistry (one to two semesters, varies by program), physics (two semesters with lab), mathematics (calculus and/or statistics), English (two semesters), and psychology (one semester). Some programs also require biochemistry, microbiology, anatomy and physiology, or additional math courses. Prerequisites vary by program, so verify requirements through OptomCAS® and individual program websites. The ASCO® website provides a searchable directory of programs with their specific prerequisite requirements.
Components of the OptomCAS Application
Academic History: Enter all college coursework from every institution. OptomCAS® recalculates your GPA, including cumulative, science, and prerequisite GPAs. Accuracy in course entry is essential because discrepancies between your entered courses and your official transcripts will delay verification. See our GPA calculator guide.
OAT® Scores: Submit your Optometry Admission Test scores. Most competitive applicants have an Academic Average of 320 or above. Programs weigh different OAT® sections differently, with some placing extra emphasis on the Physics section given its relevance to optics and the clinical practice of optometry. See our OAT® preparation guide for exam details and study resources.
Personal Statement: OptomCAS® requires a personal statement (approximately 4,500 characters). Explain why you chose optometry specifically, what experiences confirmed your interest, and what you hope to contribute to the profession. Demonstrate that you understand what optometrists do beyond prescribing glasses and contact lenses: primary eye care, diagnosis and management of ocular disease, co-management of systemic conditions that affect the eye (diabetes, hypertension), pediatric vision care, low vision rehabilitation, and specialty areas like sports vision and neuro-optometry. Ground your essay in specific experiences: shadowing an optometrist, volunteering at a vision screening event, or a personal experience with vision care that sparked your interest.
Optometry Experience: Document your optometry shadowing and observation hours. Most programs expect at least 40 to 100 hours of observation with a licensed optometrist, with many preferring exposure across different practice settings (private practice, hospital-based clinic, community health center, pediatric or specialty practice). If possible, shadow optometrists in different settings to understand the breadth of the profession. Some applicants also gain experience through optical dispensing or ophthalmic technician work, which provides hands-on clinical exposure.
Letters of Recommendation: Most optometry programs require 2 to 3 letters. At least one should be from an optometrist who has supervised your observation or volunteering. Additional letters from science professors, employers, or other healthcare professionals strengthen your application. Choose recommenders who can speak to your clinical aptitude, scientific curiosity, and interpersonal skills.
What Makes a Competitive OptomCAS Applicant
Competitive optometry school applicants typically present a strong science GPA (3.2 or above, with higher being better), an OAT® Academic Average of 320 or above, meaningful optometry observation hours across multiple settings, evidence of community service or leadership, strong letters of recommendation (especially from optometrists), and a compelling personal statement that demonstrates genuine understanding of and enthusiasm for the profession. Research experience, while not required at most programs, can distinguish you at research-intensive institutions.
Applicants who demonstrate understanding of current issues in optometry (scope of practice expansion, telemedicine in eye care, the role of optometry in managing chronic disease, disparities in vision care access) show a level of professional awareness that impresses admissions committees. Stay informed through ASCO®, the American Optometric Association (AOA), and your shadowing mentors.
After Submission
After submitting OptomCAS®, your application is verified against your official transcripts (typically 2 to 4 weeks). Programs then begin reviewing applications and extending interview invitations. Optometry school interviews may be traditional, MMI format, or panel format depending on the program. Prepare by reviewing your application, practicing answers to common questions about your motivation for optometry and your understanding of the profession, and researching each program’s specific features. See our interview question bank.
For career context, see our optometrist career profile. For related application guides, see our school list builder guide and personal statement prompts.
Understanding the Scope of Optometry: Many applicants underestimate the breadth of modern optometric practice. Optometrists do not just prescribe glasses and contact lenses. They diagnose and manage ocular diseases (glaucoma, macular degeneration, diabetic retinopathy, cataracts), detect systemic conditions through eye examination (hypertension, diabetes, autoimmune diseases, neurological conditions), provide pre-operative and post-operative co-management for eye surgery, fit specialty contact lenses for keratoconus and other complex conditions, provide pediatric vision care and developmental vision therapy, manage dry eye disease, and in many states prescribe medications including topical and oral pharmaceuticals. Your personal statement and interview responses should reflect this comprehensive understanding, not just the refractive care that most people associate with optometrists.
Vision Screening and Community Service: Volunteering at vision screenings (through organizations like the Lions Club, InfantSEE, or local community health events) provides direct exposure to the public health dimension of optometry and demonstrates your commitment to improving vision care access. Many underserved communities lack adequate access to eye care, and involvement in screenings or advocacy for vision health shows that your interest in optometry extends beyond clinical practice into community health. Document these experiences carefully in your application with dates, hours, organizations, and descriptions of your role and what you learned.
Research in Vision Science: While not required at most optometry programs, research experience in vision science, neuroscience, optics, or a related field can strengthen your application, particularly at research-intensive programs. If your undergraduate institution offers opportunities for undergraduate research in visual perception, eye tracking, corneal biology, retinal physiology, or optical engineering, consider pursuing them. Even research in tangentially related fields (neuroscience, biomedical engineering, public health) demonstrates scientific curiosity and analytical skills that translate well to optometric education and evidence-based practice.
Choosing Optometry Programs Strategically: When building your program list, consider factors beyond rankings and location. Evaluate each program’s clinical training model (how early do students see patients, what types of clinical rotations are available), residency match rates for graduates interested in specialization, NBEO pass rates (the licensing exam for optometrists), class size and student-to-faculty ratio, research opportunities, and the program’s emphasis areas (primary care, specialty contact lenses, ocular disease, pediatrics, low vision). Some programs are associated with teaching hospitals or VA medical centers, which provide exposure to complex ocular and systemic disease management. Others emphasize private practice preparation with strong business and practice management coursework. Align your program choices with your career interests and long-term professional goals.
References
Association of Schools and Colleges of Optometry (ASCO). “OptomCAS.” ASCO, 2025. https://www.optomcas.org/. Accessed March 2026.
Association of Schools and Colleges of Optometry (ASCO). “Optometry Admission Test.” ASCO, 2025. https://www.opted.org/oat/. Accessed March 2026.
American Optometric Association (AOA). “Become an Optometrist.” AOA, 2025. https://www.aoa.org/. Accessed March 2026.