FREE COA Ocular Motility and Pupils Questions and Answers

Question 1

A patient is being evaluated for double vision.
During motility testing, the patient is unable to abduct their left eye (turn it outward).
This limitation is most likely due to a weakness of which muscle and a palsy of which cranial nerve?

Accepted Answer

Lateral Rectus, CN VI

Answer

Medial Rectus, CN III

Answer

Superior Oblique, CN IV

Answer

Inferior Oblique, CN III

Question 2

When evaluating a patient's eye movements in the cardinal positions of gaze, which pair of muscles works together (as yoke muscles) to move the eyes down and to the left?

Accepted Answer

Left Inferior Rectus and Right Superior Oblique

Answer

Left Superior Rectus and Right Inferior Oblique

Answer

Left Lateral Rectus and Right Medial Rectus

Answer

Left Superior Oblique and Right Inferior Rectus

Question 3

During a swinging flashlight test, an ophthalmic assistant observes that the patient's right pupil dilates when the light is moved from the left eye to the right eye. Which of the following does this finding indicate?

Accepted Answer

A right afferent pupillary defect (APD)

Answer

Physiologic anisocoria

Answer

A left oculomotor nerve palsy

Answer

A right efferent pupillary defect

Question 4

During a cover-uncover test on a new patient, the assistant covers the patient's right eye. The uncovered left eye then moves inward (nasally) to pick up fixation. This finding indicates the presence of a:

Accepted Answer

Left Exotropia

Answer

Left Esotropia

Answer

Right Hypertropia

Answer

Right Esophoria

Question 5

What term is used to describe the rhythmic, involuntary, back-and-forth movement of the eyes?

Accepted Answer

Nystagmus

Answer

Duction

Answer

Strabismus

Answer

Version

Question 6

In the common pupillary examination acronym PERRLA, what does the 'A' represent?

Accepted Answer

Accommodation

Answer

Afferent

Answer

Anisocoria

Answer

Adduction

A patient is being evaluated for double vision.During motility testing, the patient is unable to abduct their left eye (turn it outward).This limitation is most likely due to a weakness of which muscle and a palsy of which cranial nerve?

A patient is being evaluated for double vision.
During motility testing, the patient is unable to abduct their left eye (turn it outward).
This limitation is most likely due to a weakness of which muscle and a palsy of which cranial nerve?