The answer most people want: once a year. The answer the data actually supports: it depends on your age and risk factors, and for most healthy adults, every two years is sufficient. But “most adults” is doing real work in that sentence. The exceptions — diabetes, glaucoma risk, contact lens wearers, children — account for a large share of the population.
Here’s the evidence-based schedule from the AAO and AOA, and how to apply it to your situation.
Exam Frequency by Age Group
| Age Group / Risk Status | Recommended Frequency | Key Screening Concerns |
|---|---|---|
| Infants (6–12 months) | 1 exam | Amblyopia, strabismus, refractive errors |
| Children 3–5 years | 1 exam | Vision-readiness for school, amblyopia |
| School-age through 18 | Every 1–2 years | Myopia progression, learning-related vision |
| Adults 18–39, no risk factors | Every 2 years | Refractive error, baseline glaucoma data |
| Adults 40–64, no risk factors | Every 1–2 years | Presbyopia, early glaucoma, macular changes |
| Adults 65+, all | Annually | AMD, glaucoma, cataracts, diabetic changes |
| Contact lens wearers | Annually | Lens fit, corneal health, prescription currency |
| Diabetes (Type 1 or 2) | Annually (or more) | Diabetic retinopathy monitoring |
| Glaucoma or glaucoma suspect | Every 6–12 months | IOP, optic nerve progression |
| Family history of glaucoma | Annually after 40 | Early glaucoma detection |
Why Children’s Exams Can’t Wait
The AAO’s InfantSEE program and Vision in Preschoolers research both emphasize that vision problems caught before age 7 respond far better to treatment than those caught later. Amblyopia (lazy eye) — the leading cause of monocular vision loss in children — is highly treatable before the visual system matures, but the treatment window narrows significantly after age 9–10.
According to the AAO, approximately 2–4% of children have amblyopia, and a significant portion go undetected through school screenings because standard screening tests miss the binocular and acuity differences that a comprehensive exam reveals. School screenings catch gross refractive error — they don’t diagnose amblyopia, strabismus, or convergence disorders.
The practical implication: children should have their first eye exam before age 3, not their first school screening. If school screening reveals a problem, the problem has likely already been present for years.
Your contact lens prescription expires annually by law in most states. That’s not the optical industry protecting revenue — it’s a patient safety requirement. Contact lens fitting involves not just the refraction but the lens-to-cornea relationship: base curve fit, diameter, oxygen transmission. A lens that fit perfectly 2 years ago may now be creating corneal hypoxia or mechanical irritation without obvious symptoms until the damage is done. Annual exams for contact wearers also give your OD the chance to update you to better lens technologies as they’re released.
The Diabetes Exception
Diabetic retinopathy is the leading cause of new cases of blindness among working-age adults in the US, according to the NEI. The AAO reports that nearly all patients with Type 1 diabetes and more than 60% of patients with Type 2 diabetes will develop some degree of retinopathy within 20 years.
Annual dilated eye exams are standard of care for all diabetics — and Medicare Part B covers them at no cost as a preventive benefit for diabetic patients. The reason: early retinopathy is completely asymptomatic. You will not notice it until it’s advanced. An annual dilated exam catches it at the stage where treatment is most effective.
If you have diabetes and haven’t had a dilated exam in the past year, schedule one. This is not a nice-to-have.
Glaucoma Risk Changes the Calculus After 40
The AAO’s preferred practice guidelines recommend more frequent monitoring for glaucoma suspects — people with elevated intraocular pressure, suspicious optic nerves, thin corneas, or family history. Glaucoma has no symptoms until late-stage. The peripheral vision loss it causes is permanent and irreversible.
Risk factors that warrant annual monitoring starting at age 40:
- African American or Hispanic heritage (higher prevalence rate)
- Family history of glaucoma (parent, sibling)
- Elevated intraocular pressure (ocular hypertension)
- Thin central corneal thickness (below 555 microns)
- Myopia above -6.00 diopters
If you have two or more of these risk factors, consider asking specifically about glaucoma screening at your exams — even if you’re in the “every two years” demographic by age alone.
Skipping eye exams “because my vision seems fine” is how most eye diseases go undetected until advanced stages. Glaucoma, diabetic retinopathy, early macular degeneration, and early cataracts are all asymptomatic until they’re significantly progressed. The exam exists precisely because you can’t self-screen for the conditions that matter most.
After Age 65: Annual Exams Are Standard
The AAO recommends annual exams for all adults 65 and older. Age-related macular degeneration, cataracts, glaucoma, and diabetic changes all increase in prevalence in this age group, and annual monitoring allows early detection and intervention when treatments are most effective.
Medicare Part B covers medically necessary eye visits for beneficiaries with diagnosed eye conditions. For routine refraction (glasses prescription), a separate vision plan or out-of-pocket payment is required. See Medicare Vision Coverage for the full benefit breakdown.
Bottom Line: Your Exam Schedule
- Children: First exam before age 3; then every 1–2 years through school age
- Healthy adults 18–39: Every 2 years is fine
- Adults 40–64 with no risk factors: Every 1–2 years
- Contact lens wearers: Every year
- Diabetics: Every year, no exceptions
- Glaucoma risk factors: Every 1–2 years starting at 40
- Adults 65+: Every year
See also: Eye Exam Cost for what different exam settings charge, Diabetic Eye Exam Cost for Medicare billing details, and Cheap Eye Exam Options for low-cost community resources.