extraocular muscles

(redirected from Extra-ocular muscle)
Also found in: Acronyms.

ex·tra·oc·u·lar mus·cles (EOM),

the muscles within the orbit but outside of eyeball, including the four rectus muscles (that is, superior, inferior, medial and lateral); two oblique muscles (that is, superior and inferior), and the levator of the superior eyelid (that is, levator palpebrae superioris).

extraocular muscles (EOMs)

the six sets of muscles that control movements of the eyeball. They are the superior rectus and inferior rectus, which move the eye up and down; the medial rectus and the lateral rectus, which move the eye to either side; and the superior oblique and inferior oblique, which move the eye downward and inward, and upward and inward, respectively.

ex·tra·oc·u·lar mus·cles

(eks'tră-ok'yū-lăr mŭs'ĕlz) [TA]
The muscles within the orbit including the four rectus muscles (superior, inferior, medial, and lateral), two oblique muscles (superior and inferior), and the levator of the superior eyelid (levator palpebrae superioris).

Extraocular muscles

The muscles (lateral rectus, medial rectus, inferior rectus, superior rectus, superior oblique, and inferior oblique) that move the eyeball.
Mentioned in: Eye Muscle Surgery
References in periodicals archive ?
1 depicts the distribution of the number of extra-ocular muscles affected.
In our case, the patient had extra-ocular muscles involvement along with inflammatory pseudotumor in the orbit that caused exophthalmos.
Some of the glycosaminoglycans are deposited in the extra-ocular muscles, where they attract and hold water causing swelling of the muscle bellies.
There are six extra-ocular muscles which control the movements of the eyes, four rectus muscles and two oblique muscles.
Diplopia can occur if the toxin enters the extra-ocular muscles.
2] Patients usually respond to corticosteroids, and spontaneous remission can occur, although extra-ocular muscles may not recover completely.
a Hess charts measure the deviation and the amount of under-action and over-action of the extra-ocular muscles
Whereas ocular motility testing measures the ability of the extra-ocular muscles to move in the different positions of gaze, the pursuits-accadic eye movements required in reading can be measured by using the Northern State University College of Optometry (NSUCO) test.
This article describes the extra-ocular muscles (EOMs), their contribution to this sensory-motor relationship, the investigation of eye movements, and the disease processes that can affect the EOMs and their actions.