Efficacy of the Müller Muscle-Conjunctival Resection for the Correction of Unilateral Ptosis following External Levator Operations in Patients with Bilateral Involutional Ptosis
التفاصيل البيبلوغرافية
العنوان:
Efficacy of the Müller Muscle-Conjunctival Resection for the Correction of Unilateral Ptosis following External Levator Operations in Patients with Bilateral Involutional Ptosis
SUMMARY Patients with aponeurotic blepharoptosis who are treated with external levator advancement may experience complications such as upper eyelid height asymmetry and often require revision surgery. The authors assessed the efficacy of Muller muscle-conjunctival resection in cases with upper eyelid height asymmetry following bilateral external levator advancement. The authors used retrospective analysis of 11 cases between September of 2016 and October of 2018 with eyelid asymmetry following bilateral external levator advancement. Following a positive phenylephrine test, these patients underwent unilateral Muller muscle-conjunctival resection revision surgery to treat the undercorrected eyelid. Preoperative and postoperative marginal reflex distance 1, symmetry outcomes, and clinical outcomes of patients were evaluated after the Muller muscle-conjunctival resection. The average patient age was 54.81 ± 3.95 years (range, 37 to 69 years; median, 56 years); seven patients (63.6 percent) were women. Hering dependency was seen in all patients before the external levator advancement. A total of three patients underwent bilateral external levator advancement simultaneously, and eight patients underwent bilateral external levator advancement sequentially. The phenylephrine test was positive in all patients before the Muller muscle-conjunctival resection. Symmetry outcomes were assessed after the revision surgery as perfect (
