What Does the Inferior Oblique Do?
Two of Those Muscles, the Superior and Inferior Rectus, Move the Eye up and Down When the Eye Is Rotated Away from the Nose. When the Eye Is Turned Toward the...
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Regarding this, how do you test for inferior oblique?
To test superior rectus from the inferior oblique, the clinician asks the patient to first look out (or lateral) to orient the visual gaze axis perpendicular to the inferior oblique muscle fiber direction, then up. After the inferior oblique is trapped, the only muscle that can mediate elevation is the superior rectus.
Secondly, what is the action of the inferior oblique muscle? Function. Its actions are extorsion, elevation and abduction of the eye. Primary action is extorsion (external rotation); secondary action is elevation; tertiary action is abduction (i.e. it extorts the eye and moves it upward and outwards). The field of maximal inferior oblique elevation is in the adducted position.
Simply so, what does the superior oblique muscle do?
The superior oblique muscle, or obliquus oculi superior, is a fusiform muscle originating in the upper, medial side of the orbit (i.e. from beside the nose) which abducts, depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).
Where does the inferior oblique muscle originate?
The inferior oblique originates from the maxillary bone, from the medial part of the floor of the orbit and inserts into the posterior, inferior, and lateral surface of the eyeball. The actions of the inferior oblique include extortion (external rotation), elevation and abduction of the eye.
