Final answer:
Six ocular muscles, known as extraocular muscles, control the movement of each eye, coordinated by the oculomotor, trochlear, and abducens cranial nerves.
Step-by-step explanation:
The eye is controlled by six ocular muscles known as the extraocular muscles. These muscles are responsible for the precise movements of the eye, allowing us to quickly focus on objects and follow them with our gaze. The movement of these muscles is coordinated by three cranial nerves: the oculomotor (third cranial nerve), which controls all the extraocular muscles except for the lateral rectus and superior oblique; the trochlear (fourth cranial nerve), which controls the superior oblique muscle; and the abducens (sixth cranial nerve), which controls the lateral rectus muscle. All of these work together to control the complex and coordinated movements required for normal visual tracking and focus.