strabismus (eye misalignment): Causes, Symptoms, and Treatment

Written by Medicover Team and Medically Reviewed by Dr Vompolu Kamakshi Bhaskar , Ophthalmologists

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1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Strabismus, often referred to as eye misalignment, is a condition where the eyes do not properly align with each other when looking at an object. This condition can be persistent or intermittent and can affect one or both eyes. The term "strabismus" encompasses various types of misalignments, including esotropia (inward turning), exotropia (outward turning), hypertropia (upward turning), and hypotropia (downward turning).

Understanding strabismus is crucial as it can impact vision significantly, leading to complications such as amblyopia (lazy eye) and binocular vision disorders if left untreated.

What Are the Symptoms of Strabismus?

The symptoms of strabismus can vary depending on the severity and type of misalignment. Common indicators include:

Double vision or diplopia
Misaligned eyes that point in different directions
Eye strain and discomfort
Head tilting or turning to focus on objects
Decreased depth perception
Frequent squinting or closing of one eye

These symptoms can manifest differently in children and adults. In children, strabismus is often noticed when they are unable to focus both eyes on a toy or object. In adults, the onset of double vision can be a striking symptom.

What Causes Strabismus?

Strabismus can stem from various causes, ranging from genetic factors to neurological issues. Understanding these causes is essential for effective diagnosis and treatment.

Genetic and Congenital Factors

Genetic predisposition plays a significant role in strabismus. Children with a family history of the condition are at a higher risk. Congenital strabismus can also result from developmental anomalies during gestation, affecting the muscles or nerves around the eyes.

Neurological and Muscular Causes

Neurological disorders impacting the brain's ability to control eye muscles, such as cerebral palsy, can lead to strabismus. Additionally, any trauma or disease affecting the eye muscles or the nerves controlling them can result in misalignment.

Refractive Errors

Uncorrected refractive errors, such as myopia, hyperopia, or astigmatism, can contribute to strabismus. The eyes may turn inward or outward as they struggle to focus, particularly in children.

When Should You See a Doctor for Strabismus?

Consulting an ophthalmologist is important if you notice persistent eye misalignment or vision issues.

Eyes not aligned consistently
Frequent double vision
Difficulty focusing or reading
Symptoms appearing in children

Early diagnosis and treatment can help improve vision and eye coordination.

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How Is Strabismus Diagnosed?

Diagnosing strabismus involves a comprehensive eye examination by an ophthalmologist. The process includes:

Visual Acuity Test: Assesses the clarity of vision to determine if refractive errors are present.
Cover Test: Observes the movement of each eye when the other is covered, which helps identify the type and extent of misalignment.
Retinal Examination: Evaluates the health of the retina and rules out other ocular conditions.
Neurological Examination: May be conducted if neurological causes are suspected.

Early diagnosis is critical, especially in children, to prevent the development of amblyopia and ensure effective treatment.

What Are the Treatment Options for Strabismus?

The treatment of strabismus aims to align the eyes, improve vision, and enhance depth perception. Depending on the cause and severity, several treatment options are available.

Non-Surgical Treatment Options for Strabismus

Eyeglasses and Contact Lenses

Corrective lenses can address refractive errors, reducing the strain on eye muscles and helping align the eyes. In some cases, prism lenses are used to correct double vision.

Vision Therapy

Vision therapy involves exercises designed to improve eye coordination and focus. This treatment is particularly effective in children and can help train the brain to use both eyes together.

Patching

For amblyopia associated with strabismus, patching the stronger eye encourages the weaker eye to develop better visual acuity. This method is often used in conjunction with other treatments.

Surgical Treatment

Strabismus surgery involves adjusting the position or length of the eye muscles to correct alignment. It is often considered when non-surgical methods are insufficient.

Strabismus Surgery Cost

The cost of strabismus surgery varies depending on factors such as the complexity of the surgery, the surgeon's expertise, and geographical location. In India, the cost can range from ₹25,000 to ₹1,00,000 per eye, making it a relatively affordable option compared to other countries.

Post-Surgical Management

Post-surgical care is crucial for successful outcomes. Patients may require vision therapy and regular follow-ups to ensure the eyes remain aligned and functional.

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Why Is Early Intervention Important in Strabismus?

Early intervention in strabismus is vital to prevent long-term visual impairment. In children, timely treatment can significantly enhance vision development and coordination, preventing amblyopia and other complications.

Advancements in Strabismus Management

Recent advancements in strabismus management have led to improved diagnostic tools and treatment techniques. Innovations such as adjustable sutures in strabismus surgery allow for precise correction post-operatively, increasing the success rate of surgical outcomes.