AOC AOC Ocular Motility and Strabismus 2

Question 1

Brown syndrome is characterized by limited elevation in which gaze direction?

Accepted Answer

Elevation in adduction

Answer

Brown syndrome (superior oblique tendon sheath syndrome) restricts elevation of the eye in adduction due to tightness of the superior oblique tendon.

Question 2

The prism and alternate cover test measures which component of deviation?

Accepted Answer

Total deviation (tropia + phoria)

Answer

The prism and alternate cover test dissociates fusion to measure the total deviation, including both the manifest and latent components.

Question 3

Duane retraction syndrome most commonly affects which eye movement?

Accepted Answer

Abduction

Answer

Duane retraction syndrome typically involves limitation of abduction with globe retraction and palpebral fissure narrowing on attempted adduction.

Question 4

Which measurement technique uses the deviation of a light reflex in one eye while the other fixates to estimate angle of deviation in non-cooperative patients?

Accepted Answer

Krimsky test

Answer

The Krimsky test places prisms before the deviating eye to center the corneal light reflex, estimating the angle of strabismus without requiring patient cooperation.

Question 5

In infantile esotropia, the typical angle of deviation at presentation is:

Accepted Answer

Greater than 30 PD

Answer

Infantile esotropia characteristically presents with a large, constant esotropia typically greater than 30 prism diopters.

(AOC) American Orthoptic Council Practice Test

(AOC) American Orthoptic Council Practice Test

AOC AOC Ocular Motility and Strabismus 2