PURPOSE: Ultrastructural analysis of extraocular muscle in a case of myopic strabismus fixus. DESIGN: Interventional case report. METHODS: Incisional biopsy and ultrastuctural analysis of recti muscles in a female patient with myopic strabismus fixus. RESULTS: Ultrastuctural analysis revealed evidence of mitochondrial myopathy. CONCLUSION: Acquired strabismus fixus due to high myopia may be a manifestation of mitochondrial myopathy, a finding that has not been previously reported.
PURPOSE: Ultrastructural analysis of extraocular muscle in a case of myopic strabismus fixus. DESIGN: Interventional case report. METHODS: Incisional biopsy and ultrastuctural analysis of recti muscles in a female patient with myopic strabismus fixus. RESULTS: Ultrastuctural analysis revealed evidence of mitochondrial myopathy. CONCLUSION: Acquired strabismus fixus due to high myopia may be a manifestation of mitochondrial myopathy, a finding that has not been previously reported.