Certified Ophthalmic Assistant Practice Exam

Which muscle adducts the eye?

1. iris

2. canthi

3. medial rectus

4. ciliary body

The correct answer is: medial rectus

The muscle that adducts the eye is the medial rectus, which means it moves the eye towards the nose. This muscle is responsible for horizontal eye movements and is located on the inner side of the eye. The other options are incorrect because they are not muscles and do not perform adduction movements of the eye. The iris is the colored part of the eye and controls the size of the pupil, the canthi are the corners of the eye where the upper and lower eyelids meet, and the ciliary body is responsible for producing aqueous humor and adjusting the shape of the lens for near and far vision. These structures may play a role in eye movements, but they do not specifically adduct the eye.