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Internuclear ophthalmoplegia

**{{{Name|Internuclear ophthalmoplegia}}}**
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ICD-10	H51.2
ICD-O:	{{{ICDO}}}
ICD-9	378.86
OMIM	}}}
MedlinePlus	}}}
eMedicine	}}}
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Image:Internuclear ophthalmoplegia.jpg

Internuclear ophthalmoplegia is a physical finding, or sign, that is a particular form of ophthalmoparesis. It can affect either the right or left eye. It is a disorder of conjugate lateral gaze. The affected eye shows impairment of adduction. The partner eye diverges from the affected eye during abduction, producing diplopia; during extreme abduction, compensatory nystagmuscan be seen in the partner eye.

The disorder is caused by injury or dysfunction in the medial longitudinal fasciculus, a crossed tract which links the pontine paramedian reticular formationto the oculomotor nucleus of the affected, contralateral eye.

Causes are manifold; brainstem demyelinating diseases such as multiple sclerosisare frequently found to be causal, and should be considered especially if no other abnormalities are discovered by examination or brain imaging.

External links

Video of internuclear ophthalmoplegiain multiple sclerosis

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Internuclear+ophthalmoplegia Wikipedia article Internuclear ophthalmoplegia.

All text is available under the terms of the GNU Free Documentation License