Optometry school is genuinely hard. The four-year Doctor of Optometry (OD) program combines a heavy science curriculum with thousands of hours of clinical training, and the coursework is significantly more intense than most undergraduate programs. That said, the vast majority of students who start the program finish it, with graduation rates typically above 90%.
The Course Load Is Heavier Than You Expect
A typical undergraduate semester runs 15 to 18 credit hours. In optometry school, first-year students at Ohio State carry 24 credit hours per semester, covering subjects like ocular anatomy, biochemistry, microbiology, neuroanatomy, geometric optics, and pathophysiology, all at the same time. That’s roughly 50% more coursework than a full undergraduate load, and nearly all of it is science.
The pace doesn’t ease up much after the first year. Second-year semesters range from 17 to 20 credits, and third-year terms can reach 22 to 26 credits as clinical rotations layer on top of classroom work. You’re learning pharmacology, ocular disease diagnosis, contact lens fitting, binocular vision, glaucoma management, and pediatric eye care in overlapping blocks. Summer breaks largely disappear by the second and third years.
How It Compares to Medical School
Optometry school and medical school share a foundation of basic science courses, but they diverge in depth and breadth. Medical students log roughly 1,352 hours of basic science coursework, compared to about 573 hours in optometry school. The difference reflects medical school’s need to cover every organ system in the body, while optometry concentrates on the visual system and its connections to systemic health.
Where optometry narrows its focus, though, it goes deep. Students spend an estimated 635 hours in labs and coursework specifically on ocular disease, on top of nearly 1,500 hours of optometry-specific instruction covering optics, visual perception, and clinical techniques. The overall academic intensity is real. It’s a different kind of hard than medical school rather than an easier version of it.
Clinical Training Takes Over Your Final Year
Patient care starts early but ramps up dramatically. At New England College of Optometry, a representative program, first-year students begin with school vision screenings and observing practicing optometrists. Second-year students rotate through clinics four to six hours per week. By the third year, you’re providing direct patient care across multiple primary care rotations.
The fourth year is essentially a full-time clinical job. Students complete 12 months of patient care across four three-month externships, often at different locations. Over the full four years, students see approximately 2,000 patients. The average across optometry programs is roughly 1,768 hours of total clinical experience, which is substantial on its own, even though it’s far less than the clinical exposure ophthalmologists accumulate during medical school plus residency.
Getting In Requires Strong Undergrad Performance
The difficulty starts before you even enroll. For the 2024 entering class, admitted students at competitive programs had GPAs well above 3.5. UC Berkeley’s admitted class averaged a 3.77 GPA, Ohio State averaged 3.76, and Indiana University averaged 3.80. Even less selective schools admitted students with averages around 3.4 to 3.5.
The Optometry Admission Test (OAT) adds another layer. Top programs admitted students with Academic Average scores in the 340s and 350s (on a 200-400 scale). Mid-range programs typically admitted students scoring in the low-to-mid 300s. If your undergraduate GPA is below 3.4 or your OAT scores are below 310, your options narrow considerably.
Board Exams Are a Real Hurdle
Passing three national board exams is required for licensure, and the pass rates reveal how challenging the material is. The first board exam, taken after the second year and covering basic science and clinical knowledge, has a first-time pass rate of just 66.7% as of 2024. That means roughly one in three students fails it on their first attempt. This rate has dropped steadily from 76.9% in 2015.
The second exam has seen a modest decline in pass rates over the same period, while the third exam (a clinical skills test) has held relatively steady around 80%. Failing a board exam doesn’t end your career, as retakes are available, but it can delay your graduation and add stress to an already demanding schedule.
Most Students Make It Through
Despite the difficulty, optometry school isn’t designed to weed people out. At Ohio State, graduation rates for recent entering classes have ranged from 89% to 99%, with most students finishing in four years. Academic attrition hovers around 1.5% to 3% per class. Another small percentage leave for personal or financial reasons unrelated to grades.
This high completion rate reflects two things: admissions committees select students who are academically prepared, and programs generally offer tutoring, remediation, and academic support to keep students on track. The workload is intense, but it’s manageable if you’re willing to treat it like a full-time commitment with evening hours. Students who struggle most often cite the volume of memorization, the speed at which new material is introduced, and the challenge of balancing clinical responsibilities with studying for boards.
What Makes It Hard in Practice
The difficulty of optometry school isn’t any single course. It’s the combination of a medical-school-caliber science curriculum compressed into a narrow specialty, clinical responsibilities that start early and escalate quickly, board exams with declining pass rates, and very little downtime between terms. You’re learning the anatomy of the eye, the optics of lenses, the pharmacology of eye drops, and the neuroscience of visual processing, then applying all of it to real patients within a few semesters.
If you did well in undergraduate science courses and you’re comfortable with sustained, high-volume studying, optometry school will be hard but survivable. If you struggled in organic chemistry or physics, the pace of an OD program will magnify those challenges significantly.