Daroff_02-1 Parinaud's Syndrome or Dorsal Midbrain Syndrome

Identifier: Daroff_02-1 Title: Parinaud's Syndrome or Dorsal Midbrain Syndrome Subject: Parinaud Syndrome; Dorsal Midbrain Syndrome; Eye Movement Disorders; Convergence Retraction Nystagmus Descrsiption: Also known as the pretectal, or sylvian aqueduct syndromes, it is characterized by paralysis of upgaze to both saccades and pursuit. In this video, the causes of Parinaud’s, along with its signs of large pupils with light-near dissociation, spastic-paretic accommodation, pathologic lid retraction (Collier’s sign), and convergence-retraction nystagmus are discussed. A patient with the syndrome secondary to a pinealoma demonstrates the typical nystagmus. This video is part of the Daroff Collection in NOVEL, the Neuro-Ophthalmology Virtual Education Library. Please cite the source when using this video. NOVEL.utah.edu Copyright 2010. For further information regarding the rights to this collection, please visit http://library.med.utah.edu/NOVEL/about/copyright