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  • Title: Comparison of lateral rectus muscle re-recession and medial rectus muscle resection for treatment of postoperative exotropia.
    Author: Lueder GT, Galli M.
    Journal: Am J Ophthalmol; 2015 Apr; 159(4):812-5. PubMed ID: 25634535.
    Abstract:
    PURPOSE: To compare the outcomes of unilateral lateral rectus muscle re-recession and medial rectus muscle resection for treatment of recurrent or persistent exotropia. DESIGN: Retrospective nonrandomized clinical trial. METHODS: setting: Hospital-based clinical practice. PATIENT POPULATION: Forty patients with recurrent or persistent exotropia following bilateral lateral rectus muscle recessions. INTERVENTION: Fourteen patients were treated with unilateral medial rectus muscle resection and 26 with unilateral lateral rectus muscle re-recession. MAIN OUTCOME MEASURES: Outcomes were considered successful if the patients had deviations less than 10 prism diopters (PD) at last follow-up. All patients were followed for at least 1 year postoperatively. RESULTS: The mean preoperative deviations were 17.4 PD in the medial rectus muscle resection group and 18.1 PD in the lateral rectus muscle re-recession group. Successful outcomes were achieved in 9 of 14 patients (64%) treated with medial rectus muscle resection and 19 of 26 patients (73%) treated with lateral rectus muscle re-recession. There was no statistically significant difference between these outcomes. Mean follow-up was 4.5 years in the medial rectus muscle resection group and 2.9 years in the lateral rectus muscle re-recession group. CONCLUSIONS: Surgery on a single muscle can be used to treat moderate-angle recurrent or persistent exotropia. Unilateral re-recession of the lateral rectus muscle and medial rectus muscle resection have equivalent success rates.
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