AOA Cheat Sheet 2026

The 30 highest-yield AOA facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which structure forms the blood-aqueous barrier on the anterior surface of the iris? → Iris vascular endothelium with tight junctions
2. Anisometropia is defined as a difference in refractive error between the two eyes greater than: → 1.00 D
3. When fitting toric soft contact lenses, the lens should rotate to the: → Correct orientation as marked by the stabilization ballast
4. Eccentric viewing training in low vision rehabilitation teaches a patient to: → Use a preferred retinal locus outside the damaged macula
5. What is the benefit of having an umbrella insurance policy in addition to primary insurance coverage for an optometric practice? → It increases the coverage limits beyond the primary policy
6. What is the recommended age for a child's first comprehensive eye examination according to the American Optometric Association? → At 6 months
7. How often should school-aged children have their eyes examined if they do not have any visual problems? → Every two years
8. Astigmatism is defined as a refractive condition in which: → The eye has different powers in different meridians
9. Convergence insufficiency is best defined as: → Reduced near point of convergence and low positive fusional vergence at near
10. The mechanism of action of carbonic anhydrase inhibitors (e.g., dorzolamide) in glaucoma treatment is: → Inhibiting carbonic anhydrase II in the ciliary epithelium to reduce aqueous production
11. When performing the duochrome (bichrome) test, if both red and green appear equally clear, the endpoint indicates: → The refractive correction is optimally balanced (best sphere endpoint)
12. Binasal occlusion in prism glasses is used to treat which binocular vision condition? → Exophoria with convergence insufficiency
13. The most common cause of irreversible vision loss in Americans over age 65 is: → Age-related macular degeneration
14. Which type of insurance is most commonly used to cover routine eye exams and corrective lenses? → Vision insurance
15. Central geographic atrophy of the retinal pigment epithelium is a hallmark of which condition? → Dry age-related macular degeneration
16. Which layer of the retina contains the cell bodies of the photoreceptors? → Outer nuclear layer
17. Chromatic aberration in the eye is primarily responsible for which clinical phenomenon? → Blue light focusing slightly anterior to red light (longitudinal chromatic aberration)
18. Which class of drugs is specifically contraindicated with topical pilocarpine due to risk of cholinergic toxicity? → Systemic cholinesterase inhibitors (e.g., echothiophate iodide)
19. The power of a thin lens required to correct a 4D myope is: → -4.00 D
20. Giant papillary conjunctivitis (GPC) in contact lens wearers is best managed by: → Switching to daily disposable lenses and reducing wear time
21. What condition is characterized by an imbalance in the eye muscles, leading to misalignment of the eyes? → Strabismus
22. Which treatment is considered the gold standard for anisometropic amblyopia? → Full refractive correction followed by patching or atropine penalization of the fellow eye
23. A telescope is used as a low vision device to improve: → Distance visual acuity
24. The vitreous humor is composed primarily of which substance? → Hyaluronic acid and collagen fibrils
25. Brimonidine (alpha-2 agonist) lowers IOP through which dual mechanism? → Decreasing aqueous production AND increasing uveoscleral outflow
26. Electronic magnification devices (CCTV or video magnifiers) offer which advantage over optical magnifiers? → Variable magnification, enhanced contrast, and reverse polarity viewing
27. The Purkinje-Sanson images are reflections from the four surfaces of the eye used to: → Locate the position of the crystalline lens and assess its clarity
28. What is the FDA oxygen transmissibility threshold for extended-wear soft contact lenses? → Dk/t ≥ 87 ISO units
29. What is the primary purpose of professional liability insurance for optometrists? → To protect against claims of negligence or malpractice
30. Silicone hydrogel lenses have largely replaced conventional hydrogel lenses because they offer: → Higher oxygen permeability with similar or better comfort