Can Surgery on One Eye Fix Intermittent Strabismus in Both Eyes? - Ophthalmology

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If one eye is turned due to strabismus and only one eye is used, will the other eye improve?


Hello, Doctor Gao: I have congenital intermittent exotropia, with both eyes affected (the right eye has a higher frequency).
My right eye is approximately 25 degrees exotropic, while the left eye's condition is unclear.
As a child, I would exhibit strabismus when daydreaming, but now I frequently have strabismus when not wearing glasses, especially when looking at screens.
My prescription for both eyes is about +150 diopters with 20 degrees of astigmatism.
I do not want to wear glasses all day and scheduled surgery, but the doctor only arranged for surgery on my right eye.
I didn’t realize it at the time, but can surgery be performed on just one eye when both eyes have strabismus? (I am very sure the doctor knows that both of my eyes have strabismus.) Thank you!

Xiao Bei, 20~29 year old female. Ask Date: 2021/03/26

Dr. Gao Pilin reply Ophthalmology


Hello, Xiao Bei: When examining strabismus, it is sufficient to open one eye slightly, as both eyes move together.
Opening one eye affects more than just that eye.
At the E-Hospital in Puzi, Taiwan, the ophthalmology department is open on Monday, Tuesday, Thursday, and Friday mornings from 8:00 AM to 12:00 PM, and on Wednesday afternoons from 2:00 PM to 4:30 PM.
Online responses can only serve as a reference; it is necessary to visit a medical institution for treatment.
I hope to have the opportunity to serve you.
Gao Pi-Lin

Reply Date: 2021/03/26

More Info


Intermittent strabismus, particularly when it affects both eyes, can be a complex condition to manage. In your case, where you have intermittent exodeviation (outward turning of the eye) with a degree of about 25 degrees in the right eye, it is understandable that you are seeking surgical intervention to alleviate the need for constant glasses and improve your visual comfort.

Surgery on one eye can indeed be a viable option for treating strabismus, but the outcomes can vary based on several factors, including the specific characteristics of your strabismus, the alignment of your eyes, and how your brain processes visual information from each eye. In many cases, surgeons may choose to operate on one eye to correct the alignment, especially if one eye is more affected than the other. This can help reduce the angle of strabismus and improve binocular vision, but it may not completely eliminate the strabismus in both eyes.

When only one eye is operated on, the brain may still have to adapt to the new alignment. This adaptation process can sometimes lead to a temporary increase in the strabismus in the non-operated eye, particularly if the underlying issues are not addressed. Additionally, if both eyes are affected, there is a possibility that the untreated eye may continue to exhibit strabismus, especially if it has been relying on the other eye for visual input.

In your situation, it is crucial to have a thorough discussion with your ophthalmologist or a strabismus specialist. They can provide insights into the expected outcomes of surgery on one eye versus both eyes and help you understand the potential risks and benefits. Factors such as your age, the degree of strabismus, and your overall eye health will influence the surgical approach.

Furthermore, it is essential to consider the long-term implications of surgery. While surgery can improve alignment and reduce the need for glasses, it may not completely resolve the underlying issues that contribute to strabismus. Post-operative vision therapy may be recommended to help your brain adjust to the new alignment and improve coordination between the eyes.

In summary, while surgery on one eye can be an effective treatment for intermittent strabismus, it is essential to have a comprehensive evaluation and discussion with your eye care provider. They can help you weigh the pros and cons of the surgical approach, considering your specific condition and visual needs. Ultimately, the goal is to achieve the best possible visual outcome while minimizing the risk of complications or recurrence of strabismus.

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