Jerky Seesaw Nystagmus in Isolated Internuclear Ophthalmoplegia.
- Author:
Kyungmi OH
1
;
Jae Hong CHANG
;
Kun Woo PARK
;
Dae Hie LEE
;
Kwang Dong CHOI
;
Ji Soo KIM
Author Information
1. Department of Neurology, Korea University School of Medicine, Seoul, Korea.
- Publication Type:Case Report
- Keywords:
Seesaw nystagmus;
Internuclear ophthalmoplegia
- MeSH:
Humans;
Ocular Motility Disorders*;
Semicircular Canals
- From:Journal of the Korean Balance Society
2005;4(1):49-52
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The authors report jerky seesaw nystagmus, extorsional downbeating in the right eye and intorsional upbeating in the left eye, in a patient with right internuclear ophthalmoplegia (INO). This pattern of nystagmus may occur by disrupting pathways from contralateral posterior and anterior semicircular canals by a lesion in the medial longitudinal fasciculus. Depending on damage to the pathways from contralateral vertical canals, various patterns of dissociated torsional-vertical nystagmus may accompany INO.
