AOC Evaluation & Continuing Education 4

Question 1

What does a positive Bielschowsky head tilt test confirm?

Accepted Answer

Superior oblique palsy

Answer

Increasing hypertropia on ipsilateral head tilt is the hallmark positive finding indicating superior oblique (fourth nerve) palsy.

Question 2

The AOC requires orthoptists to maintain documentation of CEU activities for how many years?

Accepted Answer

3 years

Answer

Certified orthoptists must retain documentation of completed CEU activities for a minimum of 3 years for audit purposes.

Question 3

When measuring fusional vergence amplitudes, the base-out prism break point tests which vergence mechanism?

Accepted Answer

Convergence

Answer

Base-out prisms induce an exo demand that requires convergence to maintain fusion, thus measuring positive fusional vergence.

Question 4

A child presents with pseudostrabismus. Which finding differentiates this from true esotropia?

Accepted Answer

Normal corneal light reflexes with symmetric reflex positions

Answer

Pseudostrabismus shows symmetric, normally positioned corneal light reflexes on Hirschberg testing, ruling out true misalignment.

Question 5

In evaluating a patient with thyroid eye disease, which test quantifies restrictive myopathy of extraocular muscles?

Accepted Answer

Forced duction test

Answer

The forced duction test mechanically assesses whether eye movement limitation is due to restriction (positive resistance) versus paretic muscle weakness.

(AOC) American Orthoptic Council Practice Test

(AOC) American Orthoptic Council Practice Test

AOC Evaluation & Continuing Education 4