Superior oblique myokymia

superior oblique muscle n. A muscle with origin above the medial margin of the optic canal, with insertion by a tendon passing through the trochlea to the sclera between the superior rectus and lateral rectus muscles, with nerve supply from the trochlear nerve, and whose action directs the pupil of the eye downward and outward. "superior oblique muscle." The American Heritage Stedman's Medical Dictionary. Houghton Mifflin Company, 2002. Answers.com GuruNet Corp. 07 Jul. 2005. http://www.answers.com/topic/superior-oblique-muscle

superior oblique muscle The superior oblique muscle is a muscle in the orbit that causes the eye to look downwards when it is already directed medially (looking towards the nose). It is the only muscle supplied by the trochlear nerve. The superior oblique loops through a pulley like structure (the trochlea) to get the desired movement. "superior oblique muscle." Wikipedia. Wikipedia, 2005. Answers.com GuruNet Corp. 07 Jul. 2005. http://www.answers.com/topic/superior-oblique-muscle

Here are SOM related links to abstracts, articles and other citations of material that are informative. Please share these references with your doctor. It is important to note that these resources are here only because the sources have been generous in giving us permission to link to the information. Many resources do not allow us to link directly to the document, but permit a link to their main/home page. In those cases, instructions will accompany the link information. For those of us with dial-up connections, this can certainly be more work, but it cannot be avoided.

General information regarding
ophthalmology and neurology

MR Anatomy of the Proximal Cisternal Segment of the Trochlear Nerve: Neurovascular Relationships and Landmarks
Radiology, March 1, 2002, 223:31-38
Drs. Indra Yousry, Bernhard Moriggl, Marianne Dieterich, Thomas P. Naidich, Urs D. Schmid, Tarek A. Yousry
Only one of the thirty-one subjects had SOM, but this is an excellent treatment of the trochlear nerve, microvascular decompression, with good images.
http://radiology.rsnajnls.org/cgi/content/full/223/1/31

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