title: Paretic thyroid myopathy.
abstract: Reports of vertical deviation in Graves' disease in recent years have always been associated with restrictive phenomena and positive forced duction testing, usually related to a tight inferior rectus. Two cases of medically proven Graves' diseased of ten-year duration are presented with increasing vertical disparity. Forced duction testing showed no restriction. Saccadic velocity tests using electro-oculography confirmed paresis of the inferior rectus in both cases. No cases of "true" vertical extraocular muscle paresis in chronic Graves' disease have been reported in the American literature.
mesh_terms: D000293:Adolescent; D000328:Adult; D004172:Diplopia / Q000150:complications; D004585:Electrooculography; D005260:Female; D006111:Graves Disease / Q000150:complications*; D006801:Humans; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging / Q000601:surgery*; D009886:Ophthalmoplegia / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D012438:Saccades; D014057:Tomography, X-Ray Computed