Strabismus (Crossed Eyes) and Amblyopia (Lazy Eyes)

Approximately 2% of American children have amblyopia and 3-5% have strabismus.

Amblyopia and strabismus are at times connected, but they are not the same condition.

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Strabismus (Crossed Eyes) and Amblyopia (Lazy Eyes) in PRIMARYCITY

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What is strabismus?

Strabismus is the medical term for crossed eyes which occurs when the eyes are not aligned. One or both of the eyes could be turned inwards, outwards, upwards or downwards and both eyes are not focused on the same target. It is common for this to occur when a person is very farsighted or has poor eye muscle control. The wandering eye may be a constant phenomenon or it manifests when the person is tired, ill or has done a lot of viewing up close such as reading. If left untreated, strabismus could get worse.

Risk Factors:

Family history
Refractive error - if someone is very farsighted and has not received the proper prescription for an optical correction, such as glasses
Various health conditions such as down syndrome, cerebral palsy or after a stroke or head injury

What are some signs of strabismus?

Wandering eyes
Eyes do not move in sync
Tilted head
Poor depth perception
Frequent blinking or squinting
Double vision

It is important to keep in mind that while strabismus may be noticeable in large angle strabismus, it could also easily be missed if it's intermittent, alternating or a small angle strabismus.

How is strabismus treated?

There are different treatment options, depending on the cause and diagnosis. Sometimes one or more methods are used for the same patient:

Glasses or contact lenses - at times this is the only necessary treatment
Prisms - special types of lenses which bend the light in a unique way
Vision therapy - various exercises can be used to train the eyes to focus and coordinate properly with each other and with the brain

Often these methods of treatment will suffice, but there are cases where eye muscle surgery will be recommended. It is advisable to first try the non-invasive treatment techniques above before deciding if to operate.

What is amblyopia?

Lazy eye, known medically as amblyopia, is the main cause of loss of vision in children in one eye. Amblyopia is a condition that occurs when the eyes are not working together properly as a team along with the brain. Each eye receives its own image which is not coordinated with the other. So in order to cope, the brain shuts off communication with one eye, nicknamed the ‘lazy eye’ by suppressing it. Clear vision is achieved by the other, stronger eye as the lazy eye cannot achieve 20/20 vision, even with an optical correction.

Risk Factors

Some children are more prone to developing a lazy eye. The risk factors include:

Family history
Premature birth or an infant who is born with a low weight
Developmental delay

How is amblyopia treated?

Scientific studies have proven that eye patching alone is no longer the recommended method of treating a lazy eye.

The following methods of treatment are generally offered, sometimes just one method will suffice, while other cases require a combination of various treatment methods:

Glasses or contact lenses - sometimes this is the only method required
Vision therapy - various exercises are used to train the eyes to work properly together and to communicate with the brain; studies show that treating with vision therapy could reduce the need for patching the stronger eye
Closing one eye - it’s now been proven that patching the stronger eye for a shorter amount of time while the patient is performing cognitive activities using the lazy eye yields similar results than if the eye is occluded for long periods of time

Summary

Amblyopia and strabismus are at times connected, but they are not the same condition. Patients with functional vision issues such as amblyopia visit our clinic from all over STATE, and we are proud to be a leading provider of functional vision services for patients from CITY, SECONDARY1, SECONDARY2, and SECONDARY3. To schedule a functional vision exam, please call 111-222-3333.

Learn More

Exotropia: Causes, Symptoms, Diagnosis, and Treatment Options

Exotropia is a type of strabismus where one eye turns outward. If you suspect that you may have exotropia, please see our optometrist for a treatment plan.

Strabismus Treatment in CITY: Understanding Symptoms, Treatment, Causes, Diagnosis, and Prevention

Early detection and treatment of strabismus is important to prevent further visual problems and maintain good eye health.

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