AOC AOC Ocular Motility and Strabismus

Question 1

Which term describes a constant inward deviation of one eye that cannot be controlled by fusional mechanisms?

Accepted Answer

Esotropia

Answer

Exotropia

Answer

Hypertropia

Answer

Cyclotropia

Question 2

The Hirschberg test estimates the angle of strabismus by observing the position of the corneal light reflex; approximately how many prism diopters does 1 mm of decentration represent?

Accepted Answer

15 PD

Answer

5 PD

Answer

10 PD

Answer

22 PD

Question 3

Which type of strabismus is characterized by a larger deviation in one field of gaze than another, suggesting extraocular muscle overaction or underaction?

Accepted Answer

Incomitant strabismus

Answer

Comitant strabismus

Answer

Intermittent strabismus

Answer

Microtropia

Question 4

A patient with a fourth cranial nerve palsy typically shows which type of vertical strabismus?

Accepted Answer

Hypertropia of the ipsilateral eye

Answer

Hypotropia of the ipsilateral eye

Answer

Exotropia

Answer

Esotropia

Question 5

Which test isolates each eye using an opaque occluder to detect a manifest deviation (tropia)?

Accepted Answer

Cover-uncover test

Answer

Alternate cover test

Answer

Simultaneous prism cover test

Answer

Maddox rod test

Question 6

Amblyopia secondary to strabismus is most effectively treated when initiated during which period?

Accepted Answer

During the sensitive period (before age 7–8)

Answer

After age 10

Answer

After age 7

Answer

Adulthood only