AOC Evaluation & Continuing Education 3 ā Questions and Answers
Question 1: The Titmus fly stereopsis test measures stereoacuity at what testing distance?
- 33 cm
- 40 cm (Correct answer)
- 57 cm
- 1 meter
Correct answer: 40 cm
The Titmus fly test is administered at 40 cm (approximately 16 inches) using polarized vectograph targets.
Question 2: In the evaluation of nystagmus, the null point refers to:
- The position of gaze where nystagmus is fastest
- The gaze position where nystagmus intensity is minimized (Correct answer)
- The point where nystagmus changes direction
- The primary position of gaze always
Correct answer: The gaze position where nystagmus intensity is minimized
The null point is the gaze position where nystagmus amplitude and frequency are least, often associated with an anomalous head posture.
Question 3: Which assessment tool is used to evaluate a patient's ability to perceive simultaneous perception, fusion, and stereopsis on three separate grades?
- Bagolini striated lenses
- Synoptophore (major amblyoscope) (Correct answer)
- TNO random dot test
- Maddox wing
Correct answer: Synoptophore (major amblyoscope)
The synoptophore tests all three grades of binocular visionāsimultaneous perception, fusion with amplitudes, and stereopsisāusing separate slides.
Question 4: An orthoptist identifies a patient with V-pattern esotropia. Which finding would most support this diagnosis?
- Greater esotropia in upgaze than downgaze (Correct answer)
- Greater esotropia in downgaze than upgaze
- Equal deviation in all positions
- Exotropia in upgaze only
Correct answer: Greater esotropia in upgaze than downgaze
V-pattern esotropia is defined by a larger esotropia in upgaze and smaller or no deviation in downgaze.
Question 5: According to AOC standards, what is the minimum passing score typically required on the AOC certification examination?
- 60%
- 65%
- 70% (Correct answer)
- 75%
Correct answer: 70%
Candidates must achieve a minimum passing score of 70% on the AOC written examination to obtain certification.
Question 6: When evaluating saccadic eye movements in a patient with internuclear ophthalmoplegia (INO), what key finding is expected?
- Slow abducting saccades with contralateral nystagmus
- Slow adducting saccades with contralateral abducting nystagmus (Correct answer)
- Complete horizontal gaze palsy
- Normal saccades in all directions
Correct answer: Slow adducting saccades with contralateral abducting nystagmus
INO causes slow or absent adduction in the ipsilateral eye with dissociated abducting nystagmus in the contralateral eye due to MLF lesion.
Question 7: A patient with amblyopia in the right eye is undergoing patching therapy. Which outcome measure best demonstrates treatment efficacy?
- Improvement in stereoacuity only
- Improved visual acuity in the amblyopic eye on repeat testing (Correct answer)
- Resolution of strabismus
- Increased fusional vergence amplitudes
Correct answer: Improved visual acuity in the amblyopic eye on repeat testing
The primary efficacy measure for amblyopia patching therapy is documented improvement in best-corrected visual acuity in the amblyopic eye.
AOC Evaluation & Continuing Education 3
The Titmus fly stereopsis test measures stereoacuity at what testing distance?