Extraocular muscles

Three pairs of extraocular muscles move each eye. The superior rectus and inferior oblique muscles primarily move the eye upward. The inferior rectus and superior oblique muscles primarily move the eye downward. The lateral rectus moves the eye horizontally laterally (abduction). The medial rectus muscle moves the eye horizontally medially (adduction). The superior oblique muscle incyclotorts the eye, and the inferior oblique muscle excyclotorts the eye.