CVT Gaze Stabilization & Oculomotor Assessment 2

Question 1

Dynamic visual acuity (DVA) testing measures:

Accepted Answer

The change in visual acuity between static conditions and during active head movement

Answer

DVA measures the difference in visual acuity between static conditions and during active head movement, directly reflecting the functional adequacy of VOR-mediated gaze stabilization.

Question 2

Normal VOR gain during sinusoidal rotational chair testing is approximately:

Accepted Answer

0.8–1.0

Answer

Normal VOR gain is approximately 0.8–1.0, indicating that eye velocity closely matches head velocity and gaze is maintained on the target.

Question 3

Covert saccades detected on vHIT are best described as:

Accepted Answer

Saccades that occur during the head impulse before the head stops moving

Answer

Covert saccades occur during the head impulse itself while the head is still moving; they represent an early compensatory strategy invisible to the naked eye and detectable only by video.

Question 4

The smooth pursuit eye movement system is best tested at which frequency range?

Accepted Answer

0.5–2 Hz

Answer

Smooth pursuit is most effectively assessed at 0.5–2 Hz; higher frequencies exceed the bandwidth of the smooth pursuit system and require saccadic catch-up movements.

Question 5

Which oculomotor finding most strongly suggests a central vestibular lesion rather than a peripheral one?

Accepted Answer

Direction-changing nystagmus that reverses with the direction of gaze

Answer

Direction-changing gaze-evoked nystagmus — beating toward the direction of gaze — is a hallmark of central vestibular pathology, typically involving cerebellar dysfunction.

(CVT) Certified Vestibular Therapist Practice Test

(CVT) Certified Vestibular Therapist Practice Test

CVT Gaze Stabilization & Oculomotor Assessment 2