Abstract
PURPOSE: To report an unusual response to bilateral frontalis suspension surgery for congenital ptosis. METHODS: Case report. RESULTS: A 6-year-old child with infantile esotropia and bilateral congenital ptosis received a homologous fascia lata frontalis suspension. After surgery, the patient exhibited an alternating ptosis, caused by alternating unilateral frontalis muscle contraction, which has persisted throughout 3 years of postoperative observation. CONCLUSION: Symmetric frontalis muscle activation may not always occur after bilateral frontalis muscle suspension surgery for congenital ptosis. Amblyopia, strabismus, or fixation preference may predispose patients to use unilateral brow elevation, despite bilateral frontalis muscle suspension surgery.
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