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Overcorrection after vertical muscle transposition with augmentation sutures in sixth nerve palsy
Amr Elkamshoushy1, Ahmed Awadein2, Hala Elhilali2
1Ophthalmology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
Eye (London, England)
|January 15, 2022
Summary
Consecutive exotropia can occur after vertical muscle transposition (VRT) for sixth nerve palsy. Early reoperation for significant exotropia may improve outcomes, preventing permanent overcorrection.
Area of Science:
- Ophthalmology
- Strabismus Surgery
- Neuro-ophthalmology
Background:
- Sixth nerve palsy can lead to significant eye misalignment.
- Vertical muscle transposition (VRT) is a surgical option for correcting sixth nerve palsy.
- Consecutive exotropia is a potential complication following VRT.
Purpose of the Study:
- To report cases of consecutive exotropia after VRT for sixth nerve palsy.
- To describe the management of these cases.
- To analyze the outcomes of surgical correction for consecutive exotropia.
Main Methods:
- Retrospective case series of patients undergoing VRT for sixth nerve palsy.
- Analysis of patient demographics, surgical procedures, and misalignment angles.
- Review of outcomes for patients undergoing a second surgery for consecutive exotropia exceeding 10 prism diopters.
Main Results:
- Nine out of 164 patients (5.5%) developed consecutive exotropia >10 PD after VRT.
- The average angle of consecutive exotropia was 26 ± 9 PD.
- Following a second surgery, two patients had corrected exotropia, while seven had residual exotropia; earlier reoperation correlated with better outcomes.
Conclusions:
- Early reoperation for consecutive exotropia after VRT is crucial.
- Prompt intervention can help prevent permanent overcorrection.
- Close post-operative follow-up is essential for managing VRT complications.
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