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OAT - Optometry Admission Test Practice Test

140 questions available

The Optometry Admission Test (OAT) is a standardized examination required for admission to accredited schools and colleges of optometry in the United States and Canada. Administered by the Association of Schools and Colleges of Optometry (ASCO), the OAT is a comprehensive assessment designed to measure general academic ability and comprehension of scientific information. The exam rigorously evaluates a candidate's foundational knowledge in the Survey of Natural Sciences (Biology, General Chemistry, and Organic Chemistry), Reading Comprehension, Physics, and Quantitative Reasoning (encompassing Algebra, Geometry, Trigonometry, Statistics, and Data Analysis). A strong performance on the OAT is a critical component of a competitive application, serving as a key differentiator for admissions committees. It validates a candidate's readiness for the rigorous, science-heavy curriculum of an optometry doctoral program and demonstrates the analytical and critical thinking skills essential for success in the profession. Achieving a high score signals not only mastery of prerequisite knowledge but also the discipline and aptitude necessary to excel in graduate-level healthcare education.

Certification exam
230 Exam questions
4 hours 5 minutes Time Limit
Practice bank
140 Practice Questions
2 hours 20 minutes Practice Time
Start Practice
The bank 140 Practice questions checked against the official objectives.
qf-import140 practice questionsBlueprint 1.0Bank updated 2026-05-15

Sample Questions

Try a few questions to see what the full exam is like.

Survey of Natural Sciences (General Chemistry)

For a reaction with delta H < 0 and delta S < 0, at which temperatures is spontaneity most favored?

Survey of Natural Sciences (Biology)

A patient has high blood glucose, weight loss, and very low C-peptide. Which pancreatic cell type has most likely been destroyed?

Quantitative Reasoning Test

A circle has area 16 pi. What is its circumference?

Reading Comprehension Test

Passage: A study compared two contact lens materials. Material A transmitted more oxygen but accumulated more lipid deposits after one week. Material B transmitted less oxygen but resisted deposits. Why would a clinician hesitate to choose Material A for every patient?

Reading Comprehension Test

Passage: Retinal ganglion cells transmit visual information after photoreceptors and bipolar cells process light signals. Lateral interactions sharpen contrast before information reaches the optic nerve. According to the passage, what role do lateral interactions play?

Why This Certification Opens Doors

Success on the OAT is a non-negotiable gateway to the optometry profession. It is the primary standardized metric used by admissions committees to objectively compare applicants from diverse academic backgrounds. A competitive score directly impacts your chances of receiving an interview invitation and, ultimately, an offer of admission from your preferred institution. In a field built on scientific precision and patient trust, the OAT establishes a baseline standard of competency, ensuring that entering students possess the intellectual foundation required for doctoral studies. Excelling on this exam demonstrates your commitment to the field and your potential to become a skilled healthcare provider, making it a pivotal step in launching a respected and rewarding career in optometry.

Exam Blueprint

01Physics Test
02Quantitative Reasoning Test
03Reading Comprehension Test
04Survey of the Natural Sciences

Exam Details OAT | 4 hours 5 minutes

Exam Code OAT
Vendor qf-import
Time Limit 4 hours 5 minutes
Exam questions 230

Frequently Asked Questions

What is the structure and timing of the OAT?

The OAT is a computer-based test comprising four sections: Survey of the Natural Sciences (Biology, General Chemistry, Organic Chemistry, 90 minutes), Reading Comprehension (50 minutes), Physics (50 minutes), and Quantitative Reasoning (45 minutes). Including an optional tutorial and scheduled break, the total test appointment time is approximately 4 hours and 50 minutes. The test is administered year-round at Prometric test centers.

How is the OAT scored, and what is considered a competitive score?

The OAT is scored on a scale from 200 to 400, with a median score of 300 representing the 50th percentile. Each of the four sections receives a separate scaled score, and an Academic Average is also provided. While requirements vary by school, a score of 320 or above (around the 80th-90th percentile) is generally considered highly competitive. Most optometry programs have a minimum acceptable score, often around 300, but admitted students typically score well above this threshold.

How often can I retake the OAT, and what are the limitations?

You may retake the OAT after a 90-day waiting period from your previous attempt. However, you are limited to a maximum of four attempts total, and only three attempts are permitted within a 12-month period. All scores from attempts within the past five years will be reported to the schools you designate, so thorough preparation before each attempt is crucial.

What are the key topics covered in the Quantitative Reasoning section?

The Quantitative Reasoning section assesses mathematical skills and concepts essential for optometry. Key topics include: Numerical Calculations (fractions, decimals, percentages), Algebra (equations, inequalities, functions), Geometry (properties of shapes, angles, area, volume), Trigonometry (right-triangle trig, identities, graphs), Probability & Statistics (mean, median, probability calculations), and Data Analysis & Interpretation (reading graphs, tables). Speed and accuracy in problem-solving without a calculator are vital.

How does the Reading Comprehension section differ from other standardized tests?

The OAT Reading Comprehension section features three long, dense passages typically drawn from scientific literature. The questions focus heavily on evaluating the author's purpose, identifying main ideas and supporting details, drawing inferences, and applying information from the passage to new scenarios. It tests your ability to comprehend, analyze, and synthesize complex scientific information quickly-a skill directly relevant to digesting research and clinical literature in optometry school.