Intorsion

Definition

Intorsion is the inward rotation of the eye, where the top part of the eye moves towards the nose. It is a movement controlled by certain muscles innervated by cranial nerves, specifically in response to head movements or as part of binocular vision adjustments.

Related terms

Cranial Nerves:

The twelve pairs of nerves that emerge directly from the brain and brainstem, responsible for sensory and motor functions of the head and neck.

Superior Oblique Muscle:

A muscle in the eye that contributes to intorsion, depression, and abduction of the eyeball when contracted.

Binocular Vision: The ability to maintain visual focus on an object with both eyes, creating a single three-dimensional image