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extraocular muscle

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ex·tra·oc·u·lar muscle (kstr-ky-lr)
n.
Any of the six small muscles that control movement of the eyeball within the socket.


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Although extraocular muscles are not affected, weakness in muscles around the eye (ie, obicularis oculi, a facial muscle) may be evident when patients sleep with their eyes slightly open, a symptom that may manifest itself before other symptoms develop.
A vestibular disorder has a tonic effect on the extraocular muscles through the medial longitudinal fasciculus, which makes it difficult or impossible to track words across a printed page.
The patient's extraocular muscle movements and visual acuity were intact bilaterally.
 
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