Abstract

The conventional frontalis muscle advancement technique still has some disadvantages, such as residual lagophthalmos, eyebrow ptosis, eyelid contour abnormality, and under-correction. This article describes the authors' extended frontalis muscle advancement technique that takes extensive subcutaneous separation through the eyelid crease incision for the treatment of severe congenital blepharoptosis. A retrospective review was performed that included patients with severe congenital ptosis who underwent extended frontalis muscle advancement technique from April of 2019 to April of 2021. Preoperative evaluation included age, sex, and margin reflex distance 1 (MRD1), levator function, and lagophthalmos. Postoperative evaluation including correction result, closure function of eyelid, cosmetic result was performed at the last follow-up. From April of 2019 to April of 2021, a total of 102 patients (137 eyes) who underwent extended frontalis muscle advancement technique were included in the study. The mean postoperative MRD1 in unilateral and bilateral ptosis patients was 3.84 ± 0.60 mm and 3.86 ± 0.56, respectively, and 126 eyes (92.0 percent) showed successful correction. Postoperatively, the mean residual lagophthalmos was 0.88 ± 1.40 mm, and 127 eyes (92.7 percent) showed excellent or good eyelid closure function. The average score of cosmetic results was 8.29 ± 1.34, and 94 patients (92.2 percent) had an excellent or good cosmetic result. Extensive subcutaneous separation relieves the mutual restriction between the forehead skin and frontalis muscle. The extended frontalis muscle advancement technique is effective in correcting severe congenital ptosis, while minimizing under-correction, residual lagophthalmos, eyelid contour abnormality and eyebrow ptosis. Therapeutic, IV.

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