superior oblique muscle

(redirected from Superior oblique)
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su·pe·ri·or o·blique mus·cle

(sŭ-pēr'ē-ŏr ō-blēk' mŭs'ĕl)
Origin, above the medial margin of the optic canal; insertion, by a tendon passing through the trochlea, or pulley, and then reflected backward, downward, and laterally to the sclera between the superior and lateral recti; action, primary, intorsion; secondary, depression and abduction; nerve supply, trochlear nerve.
Synonym(s): musculus obliquus superior [TA] .

superior oblique muscle

Extraocular muscle. Origin: sphenoid bone deep in medial side of orbit. Insertion: lateral surface of eyeball behind its equator. Nerve: trochlear (CN IV). Action: turns eye down and outward with medial rotation.
See also: muscle
References in periodicals archive ?
One of the depressors of the left eye: superior oblique and inferior rectus
Increase on right gaze implicates either the right superior rectus or left superior oblique.
Increase of the left hypertropia on left head tilt implicates the left superior oblique.
Similarly, most children with a congenital superior oblique palsy would find it helpful when using a computer at home to place the monitor higher than usual.
Which of the following statements about a superior oblique palsy is FALSE?
Paralysis of the superior oblique is one cause of hypertropia.
Hypertropia due to superior oblique paralysis is greater on gaze to the contralateral side.

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