| Summary: | This retrospective observational case series is to evaluate the histopathological findings of drooping eyelids in patients with infantile-onset Pompe disease and assess the feasibility of levator muscle resection combined with conjoint fascial sheath suspension for ptosis correction. It included six patients from a single tertiary referral center with ptosis and infantile-onset Pompe disease between January 1, 2013, and December 31, 2021. They most suffered from recurrent ptosis after initial surgical correction (6/11 eyes, 54.55%). The recurrence rate was high in eyes with levator muscle resection alone (4/6 eyes, 66.67%). No recurrence of ptosis was observed in eyes with levator muscle resection combined with conjoint fascial sheath suspension. The follow-up period was approximately 16–94 months. Histopathological examination revealed that the levator muscle had the most abundant glycogen accumulation-related vacuolar changes, followed by Müller's muscle and extraocular muscles. No vacuolar changes were observed in the conjoint fascial sheath. For patients with infantile-onset Pompe disease-related ptosis, performing levator muscle resection alone is not sufficient, while utilizing conjoint fascial sheath suspension can achieve the desired long-term outcomes with minimal recurrence. These findings may have important implications for the management of ophthalmic complications in patients with infantile-onset Pompe disease.
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