Vision Care Services

Eye Turn (Strabismus)

Eye Turn · Strabismus

When the eyes don’t point together.

Strabismus means the eyes aren’t aligned: one eye turns in, out, up or down while the other looks straight ahead. It can be there all the time or come and go.

In children it isn’t just cosmetic. To avoid double vision, a child’s brain shuts off the turned eye, which can lead to amblyopia (lazy eye) and poor depth perception. Some eye turns are fully corrected with glasses. Others need patching, vision therapy or surgery. The first step is finding out which kind your child has.

Types of eye turns

EsotropiaAn eye turns in, toward the nose (“crossed eyes”).

ExotropiaAn eye turns out, toward the ear. Often intermittent: it shows up when a child is tired, sick or daydreaming, or looking far away.

Hypertropia / hypotropiaOne eye sits higher or lower than the other. Sometimes the only clue is a head tilt.

Constant or intermittentSome turns are always there. Others come and go, and intermittent turns can still affect vision and depth perception.

Doctors also describe when a turn started (infancy vs. later childhood), whether it’s bigger up close or far away, and whether one eye always turns or they take turns. These details decide treatment.

Accommodative esotropia: the eye turn glasses can fix

One of the most common eye turns in toddlers and preschoolers, usually starting around ages 2 to 3, is caused by uncorrected farsightedness. A farsighted child has to focus extra hard to see clearly, and focusing and eye-turning are linked by a reflex: the harder the eyes focus, the more they cross.

The treatment is glasses that do the focusing for the child. With the full farsighted prescription, many children’s eyes straighten completely while the glasses are on. If the eyes still cross only up close, bifocal glasses can help. Because this turn is driven by the prescription, an exam with dilating drops, which reveals the full amount of farsightedness, is essential.

If your toddler’s eye has started crossing, especially when looking at books or toys up close, schedule an exam soon. Accommodative esotropia responds well to glasses, and early treatment also helps prevent amblyopia.

Is it really a turn? (Pseudostrabismus)

Many babies look cross-eyed because of a wide, flat nasal bridge or skin folds at the inner corners of the eyes that cover the white of the eye. This is called pseudostrabismus, and it fades as the face grows. Newborns’ eyes may also drift occasionally in the first few months.

But a true eye turn after about 4 months of age is never something a child grows out of. Dr. Mats uses light reflex and cover tests to tell the difference in a few minutes. If you’re unsure, it’s worth checking.

Why an eye turn matters for vision

Amblyopia: the brain suppresses the turned eye to avoid double vision, and that eye’s vision can stop developing. See lazy eye (amblyopia).
Depth perception: fine 3D vision needs both eyes aimed at the same spot.
Double vision in older children and adults whose turn starts after the visual system has matured
Confidence: children notice how others react to an eye turn, and straightening the eyes can matter socially at any age

Treatment options

Glasses, including bifocals, especially for turns driven by farsightedness
Prism lenses, which bend light so both eyes can work together for some smaller turns or double vision
Patching to treat any amblyopia that has developed
Vision therapy, which can help some intermittent turns, especially intermittent exotropia and turns linked to binocular vision disorders. Dr. Mats evaluates whether therapy is likely to help and refers to a vision therapy program when it is.
Surgery on the eye muscles. For infantile esotropia and larger constant turns, Dr. Mats refers to a pediatric ophthalmologist and continues to manage glasses and amblyopia care before and after.

Many children need more than one of these over time. Eye turns often change as children grow, so regular follow-up is part of the plan.

When an eye turn is urgent

Call us the same day, or seek emergency care, if a child or adult develops a sudden new eye turn, new double vision, a droopy eyelid, unequal pupils, or a head injury with eye symptoms. A sudden turn can be a sign of a nerve or brain problem that needs prompt evaluation. See emergency eye care.

Common questions

Will my child outgrow crossed eyes?

A true eye turn after about 4 months of age doesn’t go away on its own. Some babies only look cross-eyed because of a wide nasal bridge (pseudostrabismus), which does fade. An exam tells the difference quickly.

Can glasses straighten my child’s eyes?

For some eye turns, yes. Accommodative esotropia, an inward turn caused by farsightedness, often straightens completely with the right glasses, sometimes with bifocals. Other turns need prism, patching, vision therapy or surgery.

What’s the difference between strabismus and amblyopia?

Strabismus is an eye turn, a problem with alignment. Amblyopia is reduced vision because the brain favors one eye. An eye turn can cause amblyopia, but they can also happen separately.

Does my child need surgery for an eye turn?

Not always. Many turns are managed with glasses, prism, patching or vision therapy. When surgery is the right option, for example for infantile esotropia or a large constant turn, Dr. Mats refers to a pediatric ophthalmologist and coordinates care before and after.

My child’s eye only drifts out when they’re tired. Is that a problem?

That is often intermittent exotropia. It should be evaluated, because how often the eye drifts and how well your child keeps the eyes together guides treatment, which can include monitoring, glasses, vision therapy or surgery.

When is an eye turn an emergency?

A sudden new eye turn or double vision, especially with a headache, droopy eyelid, unequal pupils or after a head injury, needs same-day evaluation.

Medically reviewed by Dr. Christopher Tumolo, O.D., L.D.O. · Last reviewed November 10, 2026

Sources

This page is general education, not a diagnosis. Same-day appointments are available during office hours.