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Prognosis of Idiopathic Downbeat Nystagmus
Author(s) -
Wagner Judith,
Lehnen Nadine,
Glasauer Stefan,
Strupp Michael,
Brandt Thomas
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2009.03767.x
Subject(s) - nystagmus , eye movement , medicine , audiology , gaze , smooth pursuit , fixation (population genetics) , physical medicine and rehabilitation , ophthalmology , artificial intelligence , computer science , population , environmental health
Downbeat nystagmus (DBN) is a common form of acquired involuntary ocular oscillation overriding fixation. Little is known about the natural evolution of DBN in idiopathic cases. Therefore, eye movements were recorded in seven patients with idiopathic DBN by search‐coil technique over a course of up to six years. Neither the slow‐phase velocity (SPV) nor the dependency of the SPV on gaze position as an indicator of dysfunction of the oculomotor velocity‐to‐position integrator changed significantly over the time course investigated in this study.