A patient has no trouble moving her eyes but does have trouble seeing things when they are close to her face. Which cranial nerve is most likely functioning incorrectly?

Question

Quizplus · Accepted Answer

The occulomotor nerve controls the pupil size and also the shape of the lens for focusing on objects. It is responsible for providing the muscles that control most of the movements of the eye. In this case, the patient has difficulty seeing close-up objects, which is a sign of trouble with the muscles controlling the shape of the lens. Therefore, the occulomotor nerve is most likely functioning incorrectly.

A Patient Has No Trouble Moving Her Eyes but Does