Which among the following cranial nerves is related to eye movements?

Correct option is B

The abducens nerve (cranial nerve VI) is one of three cranial nerves specifically controlling eye movements. It innervates the lateral rectus muscle, which abducts the eye (moves it outward/laterally). The other eye movement nerves are oculomotor (III) and trochlear (IV). Together, these three nerves coordinate the six extraocular muscles that control eye position and movement.

Information Booster:
1. Lateral Rectus Function: The abducens nerve's sole function is controlling lateral eye movement through the lateral rectus muscle
2. Eye Movement Nerves: Three cranial nerves control eye movements - oculomotor (most muscles), trochlear (superior oblique), abducens (lateral rectus)
3. LR6SO4: Medical mnemonic - Lateral Rectus (CN6/abducens), Superior Oblique (CN4/trochlear), all others (CN3/oculomotor)
4. Clinical Signs: Abducens palsy results in inability to move the eye outward, causing horizontal diplopia (double vision)
5. Vulnerable Nerve: Has the longest intracranial course, making it susceptible to damage from increased intracranial pressure

Additional Knowledge:
• Optic nerve (A): Cranial nerve II, carries visual information from retina to brain, not involved in eye movement
• Hypoglossal (C): Cranial nerve XII, controls tongue movements
• Trigeminal nerve (D): Cranial nerve V, provides facial sensation and controls chewing muscles