COT - Certified Ophthalmic Technician Ocular Motility Testing Questions and Answers

Question 1

A technician is performing the Worth 4-Dot test on a patient.
The patient, wearing red/green glasses (red lens over the right eye), reports seeing five dots (two red and three green).
What does this result indicate?

Accepted Answer

Diplopia (double vision)

Answer

Normal binocular fusion

Answer

Suppression of the right eye

Answer

Suppression of the left eye

Question 2

Which of the following tests is designed to differentiate between a heterophoria and a heterotropia by observing the uncovered eye?

Accepted Answer

Cover-Uncover Test

Answer

Hirschberg Test

Answer

Alternate Cover Test

Answer

Maddox Rod Test

Question 3

During ocular motility testing, you ask a patient to follow your target with both eyes to the right. This binocular, conjugate movement is referred to as:

Accepted Answer

Dextroversion

Answer

Duction

Answer

Convergence

Answer

Sursumduction

Question 4

A patient presents with an inability to abduct their left eye (turn it outward). A lesion of which cranial nerve is the most likely cause of this deficit?

Accepted Answer

Cranial Nerve VI (Abducens)

Answer

Cranial Nerve II (Optic)

Answer

Cranial Nerve III (Oculomotor)

Answer

Cranial Nerve IV (Trochlear)

Question 5

While performing a Hirschberg test, the technician notes that the corneal light reflex is centered on the patient's right pupil but is displaced temporally (outward) on the cornea of the left eye. This finding is suggestive of:

Accepted Answer

Left Esotropia

Answer

Left Exotropia

Answer

Left Hypertropia

Answer

Orthophoria

Question 6

When evaluating the six cardinal positions of gaze, which two muscles are primarily responsible for moving the eyes into the 'up and right' position (dextroelevation)?

Accepted Answer

Right Superior Rectus and Left Inferior Oblique

Answer

Right Superior Rectus and Left Inferior Rectus

Answer

Right Lateral Rectus and Left Medial Rectus

Answer

Right Superior Oblique and Left Inferior Rectus

A technician is performing the Worth 4-Dot test on a patient.The patient, wearing red/green glasses (red lens over the right eye), reports seeing five dots (two red and three green).What does this result indicate?

A technician is performing the Worth 4-Dot test on a patient.
The patient, wearing red/green glasses (red lens over the right eye), reports seeing five dots (two red and three green).
What does this result indicate?