title: Lid nystagmus as a sign of intrinsic midbrain disease.
abstract: A 6-year-old boy with signs and symptoms of ocular myasthenia gravis had lid nystagmus evoked by horizontal gaze. MR imaging demonstrated an intrinsic midbrain lesion, which was diagnosed by biopsy as a low-grade astrocytoma. In the setting of ocular myasthenia gravis, the finding of lid nystagmus may serve as a useful clinical sign of intrinsic midbrain disease.
authors: Department of Ophthalmology, University of Arkansas for Medical Sciences, Little Rock, USA.
authors: M C
authors: MC
authors: Brodsky
authors: F A
authors: FA
authors: Boop
mesh_terms: D001254:Astrocytoma / Q000175:diagnosis* / Q000532:radiotherapy; D001763:Blepharoptosis / Q000150:complications; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy; D002648:Child; D005133:Eye Movements; D005141:Eyelid Diseases / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008636:Mesencephalon / Q000473:pathology*; D009157:Myasthenia Gravis / Q000175:diagnosis; D009759:Nystagmus, Pathologic / Q000175:diagnosis*; D009886:Ophthalmoplegia / Q000150:complications