Nasal Transposition of the Split Lateral Rectus Muscle for Strabismus Associated With Bilateral 3

To determine the success rate and complications associated with nasal transposition of the split lateral rectus muscle (NTSLR) for treating bilateral 3 Retrospective, interventional case series. An international, multicenter registry was used for the study. The study population was all patients with bilateral 3 A total of 34 patients were included, with a median age of 46 years (interquartile range [IQR] = 25-54 years) at surgery. The most common etiologies were ischemic (29%), neoplastic (15%), and congenital (12%). NTSLR performed unilaterally with alternative surgery on the opposite eye (65%) resulted in a median postoperative exotropia of 18 PD (IQR = 7-35 PD), and when performed bilaterally (35%) resulted in postoperative exotropia of 14 PD (IQR = 5-35 PD). Success was achieved in 50% of cases, intraoperative technical difficulties were reported in 18%, and vision-threatening complications occurred in 21%. Attachment of the lateral rectus muscle ≥10 mm posterior to the medial rectus insertion was associated with increased vision-threatening complications (odds ratio = 9.0; 95% CI = 1.3-99). NTSLR can address the large-angle exotropia associated with bilateral 3rd-nerve palsy. Surgeons should be aware that posterior placement of the lateral rectus muscle may increase the risk of vision-threatening complications, particularly serous choroidal effusion.

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