title: Ultrastructure of the levator muscle of the eyelid in ptosis due to third nerve palsy.
abstract: This paper deals with the histopathology of the levator muscle of the upper eyelid obtained in three cases of ptosis due to 3rd nerve palsy. Light- and electron-microscopy show muscle fibers decreased in number and altered, showing vacuolation, mitochondrial degeneration, large glycogen amounts, disorientation of myofibrils and Z-line changes. The findings are discussed and compared to the data reported by others.
mesh_terms: D000328:Adult; D001763:Blepharoptosis / Q000209:etiology* / Q000473:pathology; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000648:ultrastructure*; D009886:Ophthalmoplegia / Q000150:complications*