What is the function of the inferior oblique muscle in the eye?

The inferior oblique muscle plays a crucial role in the movement of the eye, particularly in its ability to look up and laterally. This muscle originates from the maxillary bone near the nasolacrimal duct and inserts into the sclera underneath the lateral rectus muscle. The primary function of the inferior oblique is to allow the eye to rotate upward while also turning outward, enabling a combined movement.

This ability to look up laterally is essential for gazing at objects that are both above and to the side without the need for compensatory head movements. The coordinated action of the inferior oblique muscle, alongside other extraocular muscles, ensures smooth and efficient eye movements. Therefore, when considering the anatomical and functional aspects of eye movement, the role of the inferior oblique in allowing upward lateral gaze solidly supports the understanding of its function within ocular motility.