Why exams matter even if you see well
Some major eye diseases are silent in their early stages. The CDC notes that open-angle glaucoma progresses slowly and often goes unnoticed until it is advanced, and that diabetic retinopathy — the leading cause of blindness among working-age American adults — is often diagnosed too late in people who skip exams. Early detection and treatment can protect vision.
What happens during a comprehensive exam
According to the American Academy of Ophthalmology, a full exam takes about 45 to 90 minutes and usually includes:
- History — your health, family eye history, medicines and current glasses or lenses.
- Visual acuity — reading a chart at different distances, one eye at a time.
- Refraction — looking through a phoropter to fine-tune your prescription.
- Pupil response — checking how pupils react to light.
- Side vision — a peripheral vision test (loss can be an early glaucoma sign).
- Eye movement — alignment and muscle function.
- Eye pressure — tonometry, by air puff or gentle touch after numbing drops.
- Front of the eye — a slit-lamp microscope examines lids, cornea, iris and lens.
- Retina and optic nerve — after dilating drops widen the pupil.
Your doctor may add imaging such as OCT scans or retinal photos.
About dilation
Dilating drops let the doctor see the retina and optic nerve properly — essential for spotting macular degeneration, diabetic eye disease and glaucoma. Your eyes may be light-sensitive and blurry for a few hours afterwards, so bring sunglasses and consider not driving yourself home.
Our Visivra review pulls the formula, the evidence, the price and the fine print together on one page.
How often should you go?
The AAO’s general guidance for adults:
| Situation | Suggested frequency |
|---|---|
| Under 40, healthy eyes, good vision | Complete exam every 5–10 years |
| Contact lens wearer | Yearly |
| Diabetes, high blood pressure or family history of eye disease | Sooner/more often, as advised |
| Age 65+ | Every 1–2 years |
| Sudden floaters, flashes, eye pain, injury or infection | See a doctor promptly |
Always follow the schedule your own eye doctor recommends.
Conditions an exam can catch
From the CDC’s overview of common eye disorders:
- Refractive errors — short- and long-sightedness, astigmatism and presbyopia (near-focus trouble, usually from ages 40–50).
- Cataract — clouding of the lens, the leading cause of vision loss in the US.
- Age-related macular degeneration — damage to central vision; dry AMD accounts for most cases.
- Glaucoma — optic nerve damage, sometimes even with normal eye pressure.
- Diabetic retinopathy — damage to retinal blood vessels.
How to prepare
- Bring your current glasses, contact lenses and a list of medicines and supplements (including Visivra or any eye supplement).
- Note symptoms: when they happen, which eye, how long.
- Know your family history of glaucoma, AMD or diabetes.
- Bring sunglasses for after dilation.
- Write down questions — for example, whether a supplement makes sense for you.
Ophthalmologist or optometrist?
The AAO describes the ophthalmologist as the medical doctor for comprehensive exams and eye-disease care, and the one to call for infections, injuries, pain or sudden floaters and flashes. Optometrists also perform eye exams and prescribe glasses in many places. Either can refer you on if something needs specialist care.
What it costs and insurance
Costs vary by country, provider and insurance. In the US, a routine vision exam may be covered by a vision plan, while a medical eye exam for symptoms or a condition such as diabetes may be billed to health insurance. Ask the clinic when booking what type of exam you’re having and what’s covered. The CDC notes that cost and insurance are among the reasons people delay care such as cataract surgery.
Where supplements fit
If your exam shows intermediate AMD, your doctor may recommend an AREDS2-type supplement with specific doses. If your eyes are healthy, there’s no requirement to take anything; diet comes first. Products like Visivra are optional — and worth discussing at your appointment with the label in hand. See Visivra alternatives.
Our Visivra review pulls the formula, the evidence, the price and the fine print together on one page.
Common questions
How long does an eye exam take?
About 45 to 90 minutes for a comprehensive exam, according to the AAO.
Does dilation hurt?
No, but drops may sting briefly and vision can be blurry and light-sensitive for a few hours.
How often should adults over 65 get an exam?
Every one to two years, per the AAO, or as your doctor advises.
Can an eye exam detect diabetes?
It can reveal diabetic damage to the retina; people with diabetes need regular exams.
Should I mention supplements to my eye doctor?
Yes — bring the label so they can check doses and interactions.
Sources
- American Academy of Ophthalmology — Eye Exam and Vision Testing Basics
- CDC — About Common Eye Disorders and Diseases
- National Eye Institute — Age-Related Eye Disease Studies (AREDS/AREDS2): major findings
Each reference was opened and read when this page was last updated (October 18, 2026).
*The Food and Drug Administration has not evaluated these statements. Visivra is not intended to diagnose, treat, cure, or prevent any disease. We publish general information, not personal medical advice: please check with your doctor, pharmacist or eye-care professional before starting a supplement — particularly during pregnancy or breastfeeding, alongside medication, or with an existing eye condition.