• Binocul Vis Strabismus Q · Jan 2001

    Case Reports

    Congenital mitochondrial cytopathy and chronic progressive external ophthalmoplegia.

    • C Speeg-Schatz, A de Saint-Martin, and D Christmann.
    • Clinique Ophtalmologique, Universitaires de Strasbourg, Strasbourg, France. claude-speeg@chru-strasbourg.fr
    • Binocul Vis Strabismus Q. 2001 Jan 1;16(3):187-90.

    BackgroundChronic Progressive External Ophthalmoplegia (CPEO) encompasses different conditions having in common a slowly progressive external and general ophthalmoplegia. The discovery of CPEO is suggestive of mitochondrial cytopathy, but this is not necessarily so.Case ReportWe report here a case, presenting at age 9 months, characterized by bilateral blepharoptosis and partial third nerve oculomotor deficiency, with no nystagmus. Mitochondrial cytopathy was suspected on cranial MRI and confirmed by muscle biopsy. Enzyme studies revealed a defect on the complex I respiratory chain. This case is unique in that the symptoms completely resolved under a Ketogen diet.

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