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Oculomotor involvement in myotonic dystrophy type 2
Author(s) -
AjroudDriss Senda,
Sufit Robert,
Siddique Teepu,
Hain Timothy C.
Publication year - 2008
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.21113
Subject(s) - myotonia , myotonic dystrophy , medicine , nystagmus , brainstem , extraocular muscles , lesion , eye movement , ophthalmology , audiology , anatomy , surgery
Oculomotor function has not been studied in patients with myotonic dystrophy type 2 (DM2). We report the presence of rebound nystagmus in seven of eight patients with DM2 in the absence of a structural brainstem or cerebellar lesion. The rebound nystagmus observed in these patients is very suggestive of ocular myotonia, and examination of patients using video‐Frenzel goggles may be a useful method for diagnosing myotonia of the extraocular muscles. Muscle Nerve, 2008