A nurse who is assessing a patient's eyes finds that the pupils are equal, round, and react to light and accommodation (PERRLA). These findings verify the expected functioning of which cranial nerve?
A) Optic cranial nerve (CN II)
B) Oculomotor cranial nerve (CN III)
C) Trochlear cranial nerve (CN IV)
D) Abducens cranial nerve (CN VI)

Question

Quizplus · Accepted Answer

The oculomotor cranial nerve (CN III) provides these eye functions. The optic cranial nerve (CN II) provides vision. The trochlear cranial nerve (CN IV) provides eye movement downward and inward. The abducens cranial nerve (CN VI) provides lateral eye movement.

A Nurse Who Is Assessing a Patient's Eyes Finds That