Amblyopia & Strabismus
Strabismus (Eye Turn)
When one eye turns in, out, up, or down, the two eyes stop working as a team. Strabismus is about more than appearance — it affects depth perception, comfort, and how the brain uses both eyes.
Overview
What Is Strabismus?
Normally, both eyes aim at exactly the same spot, and the brain blends the two slightly different views into one 3D picture. Strabismus is a misalignment of the eyes: while one eye looks at the target, the other points somewhere else.
An eye turn can be constant, or intermittent — showing up only when someone is tired, sick, daydreaming, or looking far away. It can switch between eyes or always involve the same one.
Strabismus is closely connected to amblyopia ("lazy eye"). When a child's eye turns, the brain often shuts off the turned eye to avoid seeing double. Over time, that eye can lose vision and the two eyes lose the ability to work together.
Causes
Why Eyes Turn
Eye alignment depends on the eye muscles, the nerves that control them, and the brain's ability to coordinate both eyes. A problem anywhere along that system can lead to an eye turn.
Focusing Effort
In children with significant farsightedness, the extra effort to focus can pull the eyes inward. This is called accommodative esotropia, and glasses are often the key treatment.
Eye Teaming Control
Some eye turns happen when the brain's control over alignment is weak — often an outward drift that appears when tired or looking far away (intermittent exotropia).
Family History
Strabismus often runs in families. Children with a parent or sibling with an eye turn should have their eyes checked early.
Injury or Illness
In older children and adults, a new eye turn can follow a concussion, stroke, or other neurological or medical condition.
A sudden eye turn or double vision needs prompt medical attention.
If an eye turn or double vision appears suddenly — especially with headache, droopy eyelid, weakness, numbness, or trouble speaking — seek emergency medical care right away. Strabismus that develops gradually should still be evaluated soon.
What It Can Feel Like
Children and Adults Experience It Differently
What a person notices with an eye turn depends largely on when it started.
When It Starts in Childhood
A young brain adapts by ignoring the turned eye. Children rarely complain of double vision, which is why the turn may be the only clue — and why the turned eye is at risk of developing amblyopia and reduced depth perception.
When It Starts in Adulthood
An adult brain can't easily switch off one eye, so a new eye turn usually causes double vision, eye strain, and trouble judging distances. Adults with a long-standing childhood turn may notice strain or doubling when tired.
Strabismus also has a social side. Children and adults with noticeable eye turns often report feeling self-conscious about eye contact and appearance. Treating the turn can improve confidence as well as vision.
What to Watch For
Signs & Symptoms
Some eye turns are obvious. Others are small or only come and go, so they're easy to miss in photos or everyday life.
- An eye that wanders in, out, up, or down
- An eye that drifts when tired, sick, or daydreaming
- Closing or covering one eye, especially in bright sunlight
- Tilting or turning the head to see
- Double vision
- Poor depth perception or clumsiness
- Trouble catching or hitting a ball
- Eye strain or headaches with visual tasks
- Eyes that look "off" in photos
- Family members noticing the eyes don't line up
Common Misconceptions
"They'll Grow Out of It."
Newborns' eyes can wander occasionally during the first few months while their visual system develops. But an eye turn that's constant at any age, or still present after about 4 months of age, isn't something a child outgrows and should be evaluated.
Some babies only look cross-eyed because of a wide, flat bridge of the nose or skin folds near the inner eye. This is called pseudostrabismus, and it fades as the face grows. A professional evaluation is the only way to tell the difference.
Another common belief is that an eye turn is purely cosmetic. In reality, strabismus can affect vision in the turned eye, depth perception, reading comfort, sports, and driving — which is why treatment focuses on how the eyes function, not just how they look.
Treatment
How Strabismus Is Treated
The right treatment depends on the type of eye turn, its size, whether it's constant or intermittent, and the patient's age. Many patients benefit from a combination.
Glasses
Correcting farsightedness can straighten some inward eye turns on its own, and the right prescription supports every other treatment.
Prism Lenses
Prisms built into glasses shift images to help the eyes line up, reducing double vision and strain for some patients.
Vision Therapy
Guided activities that build eye-teaming control, so the brain can keep both eyes aligned and use them together for depth perception.
Surgery
Eye muscle surgery, performed by a strabismus surgeon, changes the position of the eyes when a turn is large or constant.
Our Approach
How Hope Vision Helps
Care starts with a Binocular Vision Evaluation with Dr. Allison Toler. We measure the size and type of the eye turn, how often it occurs, vision in each eye, eye teaming, and depth perception, so we understand how the two eyes are working together.
From there, Dr. Toler builds an individualized plan that may include glasses or prism, treatment for amblyopia, and vision therapy through our In-Office, At-Home, or Hybrid programs, with one-on-one sessions led by a Vision Therapist and regular progress evaluations. When surgery may be needed, we refer to and coordinate with a strabismus surgeon.
We treat children, teens, and adults — including adults with double vision after a concussion or brain injury. Hope Vision is a private-pay practice and an approved provider for Florida Empowerment Scholarship (FES-UA) funding.
Common Questions
Strabismus FAQ
Is strabismus the same as "lazy eye"?
Not exactly. Strabismus is an eye turn. Amblyopia ("lazy eye") is reduced vision because the brain favors the other eye. A turned eye can develop amblyopia, so the two often go together, but each can occur on its own.
Can vision therapy fix an eye turn without surgery?
For some types — especially intermittent eye turns and those related to eye-teaming or focusing — vision therapy, glasses, and prism can be very effective. Large or constant turns may need surgery, often combined with vision therapy. Your evaluation will show which approach fits.
If my child had surgery, why would they need vision therapy?
Surgery repositions the eyes, but the brain still has to learn to use them together. Vision therapy helps build eye teaming and depth perception, which supports a more stable, functional result.
Can adults be treated for strabismus?
Yes. Adults with long-standing eye turns, or new turns after a concussion or other injury, can benefit from glasses, prism, vision therapy, and surgery. Any sudden new eye turn or double vision should be checked by a medical doctor right away.
At what age should my child be checked?
Any time you notice an eye turn, at any age. An eye that turns constantly, or is still wandering after about 4 months of age, should be evaluated. Early care helps protect vision and depth perception.
Do you take insurance?
Hope Vision is a private-pay practice. We are an approved provider for Florida Empowerment Scholarship (FES-UA) funding, and payment plans are available for therapy programs. Call us at 352-243-4673 with any questions.
Concerned About an Eye Turn?
A Binocular Vision Evaluation will tell you clearly what kind of eye turn is present, how it's affecting vision, and what to do next.
Questions? Call 352-243-4673