Eye Health

How Often Should You Get Your Eyes Tested?

Most people go when something feels wrong. By then, several of the conditions an eye test detects have already progressed. Here is the schedule by age, and what actually happens during an exam.

🕔 8 min read👁 Eye health📖 Explainer

Why waiting for symptoms does not work

The eye is remarkably good at hiding problems. Vision loss that develops slowly gets compensated for by the brain, and damage in one eye is masked by the other. People routinely discover significant vision loss only when they happen to cover one eye.

Several important conditions are painless and symptomless in their early stages. Glaucoma damages peripheral vision first, which is exactly the part you notice least. Diabetic changes to the retina can be well advanced before central vision is affected.

An eye examination is therefore a screening appointment as much as a prescription check, and the value of screening depends entirely on doing it before you have symptoms.

How often, by age

These are general intervals for people without specific risk factors. They shorten considerably if any of the following apply.

Diabetes, which requires at least annual retinal screening regardless of how good your vision feels. A family history of glaucoma, which raises your own risk substantially. Existing high prescription, particularly high myopia, which carries increased retinal risk. Previous eye injury or surgery. And any occupation with sustained visual demand or eye hazard.

Children need earlier attention than most parents expect

Children almost never report blurred vision, because they have no reference for what clear vision should look like. A child who has always seen a blurred blackboard assumes everyone does.

This matters more than in adults because the visual system is still developing. Uncorrected vision problems in early childhood can affect how the brain learns to process vision, and the window for correcting that is limited.

Watch for behavioural signs rather than complaints: sitting very close to screens, holding books unusually near, squinting, tilting the head, covering one eye, avoiding reading, or unexplained difficulty at school. Any of these justify a check regardless of schedule. Rising rates of myopia among Indian children make routine screening more valuable than it once was.

What happens during an exam

A full examination is considerably more than reading letters off a chart.

Visual acuity measures how clearly you see at distance and near. Refraction determines your prescription, using either the lens-flipping subjective method or an automated instrument as a starting point.

Eye pressure testing screens for glaucoma risk. A slit lamp examination inspects the front structures of the eye under magnification. Retinal examination looks at the back of the eye, sometimes with dilating drops, and this is where diabetic changes and many other conditions first appear.

Eye movement and coordination testing checks that both eyes are working together, and visual field testing maps your peripheral vision where indicated.

Signs that should not wait for your next appointment

Some symptoms warrant same-day attention rather than a scheduled visit.

A sudden increase in floaters, flashes of light, or a curtain or shadow moving across your field of vision. These can indicate retinal detachment, where speed of treatment materially affects outcome.

Sudden loss of vision in one eye, whether or not it recovers. Sudden onset of double vision. Severe eye pain, particularly with nausea, redness and halos around lights.

Any injury involving chemical splash or a foreign body that does not wash out easily. Chemical exposure needs immediate irrigation and immediate assessment.

Frequently asked questions