OAT Study Guide 2026–2027 — Redesigned Illustrated Edition | 200 Practice Questions

Prepare for the Optometry Admission Test with a complete, illustrated study guide that reviews every subject on the exam and includes 200 exam-level practice questions with detailed answer explanations.

WHAT'S INSIDE

• 107 pages, 8.5 × 11 in, print-ready PDF with a clickable table of contents
• Current exam facts: 230 questions in four tests (Survey of the Natural Sciences 100, Reading Comprehension 50, Physics 40, Quantitative Reasoning 40), timing, the 200–400 scale, Total Science and Academic Average, the examination fee, and retest rules
• Biology: cell structure and transport, respiration and photosynthesis, molecular genetics, cell division, heredity, diversity of life, organ systems including the eye, evolution, and ecology
• General Chemistry: atomic structure, bonding, gases, solutions, stoichiometry, acids and bases, equilibrium, thermodynamics, kinetics, electrochemistry, nuclear reactions, and lab skills
• Organic Chemistry: nomenclature, stereochemistry, acid-base ranking, SN1/SN2/E1/E2, carbonyl and aromatic reactions, IR and NMR spectroscopy, and separation techniques
• Reading Comprehension: main idea, inference, argument evaluation, experimental design, and a 20-minute-per-passage pacing plan
• Physics: kinematics, statics, dynamics, energy, momentum, rotation, waves, optics and lenses, fluids, thermodynamics, electrostatics, and D.C. circuits
• Quantitative Reasoning: algebra, absolute value and inequalities, data analysis and sufficiency, quantitative comparison, probability, statistics, and word problems
• 57 quick-reference tables, 30 formula boxes, and labeled diagrams of the eye, heart, nephron, a converging-lens ray diagram, a reaction coordinate diagram, and circuits
• 2 practice tests with 100 questions each (200 total), following the order of the real exam, including full-length scientific reading passages
• Complete answer keys with an explanation for every question
• Six-month, three-month, and six-week study plans, FAQs, test-taking strategies with pacing targets, and test-anxiety techniques

WHO IT'S FOR

• Pre-optometry students preparing for the OAT
• Career changers and post-baccalaureate students applying to optometry school
• Advisors and instructors supporting optometry admissions preparation

FORMAT

Instant digital download. Study on any device or print at home. No physical item will be shipped.

PLEASE NOTE

All exam and organization names referenced, including OAT and Optometry Admission Test, are trademarks of their respective owners. This product is not affiliated with or endorsed by the Association of Schools and Colleges of Optometry (ASCO), the American Dental Association (ADA), or any testing organization.