WebThere are six extraocular muscles that control all of the movement of the eye. These muscles are the superior rectus, inferior rectus, lateral rectus, medial rectus, superior oblique, and inferior oblique. The muscles of the eye are designed to stabilize and move both eyes. Special nervous centers located throughout the brain and brainstem interact … WebAug 8, 2024 · The anteroposterior axis enables the movement of the superior pole of the eye medially (intorsion) or laterally (extorsion). The rotations around the anteroposterior axis allow the eye to adjust to the tilting of the head. The medial rectus muscle is responsible for medial rotation around the vertical axis, and the lateral rectus lateral ...
Extraocular Movements and Approach to Diplopia: Cranial nerves …
WebApr 1, 2013 · In a study, intorsion and extorsion have been reported being associated with oblique dysfunction in 78.7 and 74.4% of the participants with an increase in patients without stereopsis [17]. Ductions are monocular eye movements. Movement of the eye nasally is adduction; temporal movement is abduction. Elevation and depression of the eye are termed sursumduction (supraduction) and deorsumduction (infraduction), respectively. Incycloduction (intorsion) is nasal rotation of the vertical … See more The primary muscle that moves an eye in a given direction is known as the agonist. A muscle in the same eye that moves the eye in the same direction as the agonist is known as the … See more Abnormality of the accommodative convergence to accommodation ratio may cause certain types of strabismus. [4, 5, 6] Fusional … See more Yoke muscles are the primary muscles in each eye that accomplish a given version (eg, for right gaze, the right lateral rectus and left medial rectus muscles). Each extraocular muscle … See more brinton lake surgery center pa
Extraocular Muscle Actions: Eye Movements, Rectus …
WebWhat is Intorsion and extorsion? Incycloduction (intorsion) is nasal rotation of the vertical meridian; excycloduction (extorsion) is temporal rotation of the vertical meridian. Can … Webextorsion: [ eks-tor´shun ] tilting of the upper part of the vertical meridian of the eye away from the midline of the face. WebJul 31, 2016 · For example, adduction involves simultaneous contraction of the medial, superior, and inferior recti and relaxation of the lateral rectus and the superior and inferior obliques; the intorsion and extorsion of the superior and inferior recti cancel each other. Table 21-1 Extraocular Muscles Contributing to Movements Around Different Axes brinton manor apartments braddock hills pa