Eyes Won't Align? Why Your Eyes Are Crossing: Strabismus Medical Steps

If your eyes don't seem to line up—or your child's eyes appear to "cross"—you may be dealing with strabismus. This condition, sometimes called being "cross-eyed" or "wall-eyed," happens when the eyes do not point in the same direction at the same time.

Strabismus is common, especially in children, and it is treatable. In adults, it can also develop suddenly and may need prompt medical attention. Understanding what's happening and what steps to take can make the process much less stressful.

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What Is Strabismus?

Strabismus is a condition where the eyes are misaligned. One eye may look straight ahead while the other turns:

• Inward (esotropia)
• Outward (exotropia)
• Upward (hypertropia)
• Downward (hypotropia)

The misalignment may be:

• Constant or intermittent
• Present from birth or developed later
• Mild or very noticeable

Strabismus happens because the muscles that control eye movement are not working together properly. Each eye has six muscles that must coordinate precisely. If that coordination is disrupted, the eyes can drift apart.

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Why Do Eyes Cross?

There are several possible causes of strabismus, and the reason can differ between children and adults.

In Children

Strabismus in children is often due to:

• Problems with eye muscle control
• Significant farsightedness (hyperopia)
• Family history of strabismus
• Neurological conditions such as cerebral palsy
• Developmental delays

Sometimes no clear cause is found. The brain may struggle to fuse the two images from each eye into one, leading one eye to turn.

In Adults

When strabismus develops in adulthood, common causes include:

• Stroke
• Head injury
• Diabetes-related nerve damage
• Thyroid eye disease
• Brain tumors (rare, but serious)
• Longstanding childhood strabismus returning

Sudden onset strabismus in adults—especially with double vision—should be evaluated promptly.

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Symptoms of Strabismus

Symptoms depend on age and severity. Some people notice obvious eye crossing. Others experience more subtle signs.

Common symptoms include:

• Eyes that visibly do not align
• Double vision (more common in adults)
• Head tilting or turning to see clearly
• Squinting or closing one eye in bright light
• Poor depth perception
• Eye strain or headaches

Young children may not complain of double vision because the brain may "turn off" the image from one eye to avoid confusion. This can lead to amblyopia (lazy eye) if untreated.

If you're experiencing any of these symptoms and want to better understand what may be causing your eye misalignment, Ubie's free AI-powered Cross eyed Symptom Checker can help you identify potential causes before your doctor's appointment.

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Why Early Diagnosis Matters

Strabismus is not just a cosmetic issue. If untreated, it can lead to:

• Permanent vision loss in one eye (amblyopia)
• Loss of depth perception
• Chronic double vision
• Social or psychological effects

In children, early treatment greatly improves outcomes. In adults, identifying the underlying cause is critical—especially if the misalignment appeared suddenly.

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Medical Steps: What Happens at the Doctor's Visit?

If you suspect strabismus, the first step is a full eye exam with an optometrist or ophthalmologist.

1. Medical History

Your doctor will ask about:

• When the eye crossing started
• Whether it is constant or occasional
• Any recent illness or injury
• Family history of eye problems
• Other neurological symptoms (weakness, numbness, trouble speaking)

Be honest and thorough—these details matter.

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2. Eye Alignment Tests

The doctor will check:

• How well each eye moves
• Whether both eyes track objects together
• Visual acuity (clarity of vision)
• Depth perception

A common test is the "cover test," where one eye is covered to see how the other responds. This helps measure the degree of misalignment.

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3. Refraction Test

This determines whether glasses are needed. In many children, farsightedness contributes to strabismus, and corrective lenses alone may significantly improve alignment.

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4. Neurological Evaluation (If Needed)

If strabismus appears suddenly in an adult or is accompanied by other neurological symptoms, your doctor may order:

• Brain imaging (MRI or CT scan)
• Blood tests (to check for diabetes or thyroid issues)

These tests rule out serious underlying causes.

If you experience:

• Sudden double vision
• Severe headache
• Weakness or numbness
• Trouble speaking
• Drooping eyelid

Seek urgent medical care. These can signal a stroke or other life-threatening condition.

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Treatment Options for Strabismus

Treatment depends on age, severity, and underlying cause. Many people improve significantly with proper care.

1. Glasses or Contact Lenses

Correcting refractive errors can sometimes straighten the eyes, especially in children with farsightedness.

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2. Prism Lenses

Prism glasses can help reduce double vision by adjusting how light enters the eyes. They do not cure strabismus but can improve symptoms.

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3. Patching Therapy

If one eye is weaker (amblyopia), the stronger eye may be patched temporarily. This forces the brain to use the weaker eye and improves vision development in children.

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4. Eye Muscle Exercises (Vision Therapy)

Certain types of strabismus—particularly convergence insufficiency—can improve with supervised eye exercises. These strengthen coordination between the eyes.

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5. Botox Injections

Botulinum toxin may be injected into specific eye muscles to temporarily weaken them and improve alignment. This is not appropriate for all cases but can be useful in selected patients.

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6. Strabismus Surgery

When other treatments are not enough, surgery may be recommended.

During surgery:

• The eye muscles are repositioned or tightened
• The goal is better alignment
• It is typically done as an outpatient procedure

Surgery does not remove the eye. It adjusts the muscles attached to it. Recovery is usually manageable, with temporary redness or soreness.

Some patients may need more than one surgery, particularly if the misalignment is severe.

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Can Strabismus Go Away on Its Own?

True strabismus does not typically resolve without treatment. However:

• Some newborns have temporary eye crossing that improves by 3–4 months of age.
• Intermittent cases may fluctuate.

If misalignment persists beyond infancy or appears later in life, it should be evaluated.

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Living With Strabismus

Many people with strabismus live full, healthy lives. Treatment can improve:

• Vision clarity
• Eye coordination
• Confidence
• Comfort

Adults who have had strabismus for years may adapt well and not experience double vision. Treatment decisions in these cases are individualized.

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When to Speak to a Doctor

You should speak to a doctor if:

• Your child's eyes do not align consistently after 4 months of age
• You notice eye crossing at any age
• Double vision develops
• Symptoms appear suddenly
• You have other neurological symptoms

Strabismus is often manageable, but sometimes it signals a serious condition. Do not ignore sudden changes.

If anything feels severe, rapidly worsening, or life-threatening, seek emergency medical care immediately.

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The Bottom Line

Strabismus is a condition where the eyes do not align properly. It can occur in children or adults and may result from muscle coordination issues, refractive errors, nerve problems, or medical conditions.

The good news:

• Many cases are treatable.
• Early care improves outcomes.
• Modern medical options are effective.

If you're noticing eye misalignment and want to understand what might be causing it, try Ubie's free AI-powered Cross eyed Symptom Checker to get personalized insights based on your specific symptoms. Then follow up by speaking directly with a qualified healthcare professional.

When it comes to your vision—or your child's—it's always wise to get expert guidance. Speak to a doctor about any symptoms that are persistent, worsening, or possibly serious. Early evaluation can protect sight and overall health.