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Kearns-Sayre syndrome (KSS) was first described in 1958 as 'a rare neuromuscular disorder defined by a characteristic triad of progressive external ophthalmoplegia, pigmentary retinopathy, atrioventricular block and cerebellar ataxia'. The prevalence rate of KSS is ∼1-3 per 100 000 individuals. Here, we report a rare case of a 17-year-old Venezuelan male with KSS.

A rare case of Kearns–Sayre syndrome in a 17-year-old Venezuelan male with bilateral ptosis as the initial presentation