OAT - Optometry Admission Test Practice Test

140 questions available

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Certification exam
230 Exam questions
4 hours 5 minutes Time Limit
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140 Practice questions
2 hours 20 minutes Practice Time
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Exam overview and details

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.

Sample Questions

Choose an answer and explore the explanation to see how practice works.

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?

Exam insights and study advice

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.

What this exam covers

01Physics Test

02Quantitative Reasoning Test

03Reading Comprehension Test

04Survey of the Natural Sciences

Exam Details OAT | 4 hours 5 minutes

Exam Code OAT
Vendor ADA (OAT)
Time Limit 4 hours 5 minutes
Exam questions 230

Frequently Asked Questions

What is the structure and timing of the OAT?

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

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

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

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