Question

Which of the following cranial nerve helps in accommodating the eye for near vision?

• A. Oculomotor
• B. Optic
• C. Trochlear
• D. Facial

Answer 1

The Correct Option is A

The question asks which cranial nerve assists in accommodating the eye for near vision. Let's explore the given options to identify the correct cranial nerve involved in this function:

1. Oculomotor Nerve (Cranial Nerve III):

   This nerve is crucial for eye movements and pupil constriction. It innervates the ciliary muscles of the eye, which are responsible for altering the shape of the lens, thus aiding in accommodation for near vision. This makes the oculomotor nerve the correct answer.

2. Optic Nerve (Cranial Nerve II):

   Although the optic nerve is essential for vision, its function is to transmit visual information from the retina to the brain. It does not contribute directly to accommodation for near vision.

3. Trochlear Nerve (Cranial Nerve IV):

   This nerve controls the superior oblique muscle of the eye, allowing for downward and lateral movements. It does not play a role in accommodation for near vision.

4. Facial Nerve (Cranial Nerve VII):

   Primarily responsible for facial expressions, taste sensations from the anterior two-thirds of the tongue, and some glandular functions, the facial nerve does not aid in accommodation for near vision.

Based on this explanation, the Oculomotor Nerve (Cranial Nerve III) is the cranial nerve that helps in accommodating the eye for near vision.