Purpose: To report the surgical effects of a combination treatment comprising the lateral rectus belly transposition (LRBT) procedure, without muscle splitting or disinsertion, and ipsilateral antagonist recession for vertical rectus palsy.
Methods: The medical records of consecutive patients who underwent the LRBT procedure between 2017 and 2020 were reviewed. Preoperative and postoperative deviation in primary position, preoperative and postoperative scale of duction of the palsied muscle, any induced horizontal or torsional deviation, and other complications were collected.
Results: Thirteen patients were identified: 10 with inferior rectus palsy and 3 with superior rectus palsy. The mean postoperative follow-up time was 20.4 ± 8.0 months. Eleven patients (84.6%) underwent simultaneous recession of the ipsilateral antagonist muscle of the palsied vertical rectus. After surgery, the mean vertical deviation improved from 31.4 ± 16.4 to 1.9 ± 3.6 prism diopters (PD) ( < .001). The mean vertical duction limitation of the palsied muscle improved from -2.7 ± 0.6 to -0.6 ± 0.5 ( = .001). In one patient, the scleral fixation suture was removed due to continuous reverse vertical diplopia. The total success rate was 76.9%. No induced horizontal deviation was noted. Anterior segment ischemia or other severe surgical complications did not occur.
Conclusions: The LRBT procedure can be effective, safe, and reversible in patients with vertical rectus palsy. It allows for the option of simultaneous ipsilateral antagonist recession, and it is especially valuable in patients whose vertical duction deficiency is worse in abduction but mild in adduction. .
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