title: Case Report: Exotropia Surgery in CPEO.
abstract: Exotropia in a patient with CPEO was managed with bilateral medial rectus resections. Molecular genetic analysis of DNA from a skeletal muscle biopsy confirmed a deletion of the mitochondrial DNA. The resected muscle tendon was subjected to transmission electron microscopy, revealing muscle fibre variability and ragged red fibres with mitochondrial abnormalities.
authors.forename: Ian M
authors.initials: IM
authors.lastname: Macdonald
authors.forename: Edward S
authors.initials: ES
authors.lastname: Johnson
authors.forename: Brad
authors.initials: B
authors.lastname: Wakeman