What to Expect at Your Eye Exam After 40

After 40, your eyes can look and feel perfectly normal while serious conditions develop silently. Glaucoma, macular degeneration, and diabetic eye disease can all begin without any noticeable symptoms — and by the time you notice changes, permanent vision loss may have already occurred.

That is why eye exams change after 40. Your optometrist is no longer just checking your prescription. They are screening for conditions you cannot detect on your own.

What is different about an eye exam after 40?

In your twenties and thirties, eye exams focus primarily on vision correction and basic eye health. After 40, your optometrist may add several tests designed to catch conditions in their earliest, most treatable stages.

The exam itself may take a bit longer. Your optometrist will likely ask more questions about your health history, medications, and family history of eye disease. These details help guide which tests are most important for you.

What should you discuss with your optometrist?

Coming prepared with the right information helps your optometrist tailor your exam. Here are key topics to bring up:

Family history. If a parent or sibling has had glaucoma, macular degeneration, or diabetes, let your optometrist know. Family history significantly increases your risk for many eye conditions, and your optometrist may recommend earlier or more frequent screening.

Changes in near vision. If you are holding your phone further away or struggling with small print, you are likely experiencing presbyopia — a normal loss of near-focus ability that begins around 40. Your optometrist can discuss correction options.

Screen time and visual demands. How many hours you spend on screens, the type of work you do, and the distances you work at all affect which lens options your optometrist may recommend.

Medications. Many common medications affect the eyes, including corticosteroids, antihistamines, antidepressants, and blood pressure drugs. Bring a complete list of everything you take, including supplements.

New or unusual symptoms. Flashes of light, new floaters, sudden blurred vision, or a shadow in your peripheral vision are all symptoms your optometrist needs to know about immediately. Some of these can signal conditions that require urgent attention.

What tests might your optometrist include?

Your optometrist will decide which tests are appropriate based on your individual risk profile. Common additions after 40 include:

Dilated exam or retinal imaging. These allow your optometrist to examine the optic nerve and macula in detail, looking for early signs of glaucoma, macular degeneration, and diabetic eye disease.

Tonometry. This measures the pressure inside your eyes. Elevated pressure is a major risk factor for glaucoma, though glaucoma can also develop at normal pressures — which is why pressure measurement alone is not enough.

Visual field testing. This maps your peripheral vision. Glaucoma often damages side vision first, so gradually that you may not notice until significant loss has occurred.

OCT (optical coherence tomography). If indicated, this imaging scan provides a detailed cross-section of the retina and optic nerve, allowing your optometrist to detect microscopic changes that are invisible during a standard exam.

How often should you come back?

The Canadian Association of Optometrists recommends a comprehensive eye exam every one to two years for adults aged 40 to 64, and annually after age 65. Your optometrist may recommend more frequent visits if you have risk factors such as diabetes, a family history of glaucoma or macular degeneration, high myopia, or high blood pressure.

These are general guidelines. Your optometrist will recommend a schedule based on what they find during your exam and your individual risk profile.

How can you get the most from your appointment?

The best thing you can do is come prepared. Bring your medication list, know your family history, and be ready to describe any changes you have noticed — even if they seem minor.

Your optometrist is your partner in protecting your vision. The more they know about your health, your habits, and your concerns, the better care they can provide. Conditions caught early have far more treatment options than conditions caught late — and many of the most serious ones can only be found through a comprehensive exam.