Which cranial nerves are primarily responsible for eye movement?

The cranial nerves primarily responsible for eye movement are the oculomotor (CN III), trochlear (CN IV), and abducens (CN VI) nerves.

The oculomotor nerve innervates most of the extraocular muscles, which are crucial for various eye movements, including upward, downward, and inward movement. It also is responsible for accommodating the lens and controlling the pupil's constriction. The trochlear nerve specifically innervates the superior oblique muscle, which enables the eye to move diagonally downward and outward. The abducens nerve controls the lateral rectus muscle, which allows for lateral eye movement (abduction). Together, these three nerves coordinate the complex movements required for proper eye function and coordination.

In contrast, the other options do not include the correct combination of cranial nerves for eye movement. The optic nerve (CN II) is primarily responsible for vision, the trigeminal nerve (CN V) is mainly involved in sensation and motor functions of the face, while both the vestibulocochlear nerve (CN VIII) deals with hearing and balance. The olfactory nerve (CN I) is associated with the sense of smell, and the facial nerve (CN VII) is related to