Ocular Motility Testing Flashcards
7 cards from real COT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ocular Motility Testing flashcards as text
During the alternate cover test, the examiner notes that the uncovered eye moves inward when the cover is removed. This finding indicates:
Answer: Exophoria
When the uncovered eye moves inward (nasally), it was deviated outward under the cover, indicating exophoria.
The Hirschberg corneal light reflex test estimates approximately how many prism diopters of deviation per millimeter of decentration?
Answer: 22 PD per mm
The Hirschberg test estimates approximately 22 prism diopters of deviation per millimeter the light reflex is decentered from the corneal center.
Which muscle is the primary abductor of the eye?
Answer: Lateral rectus
The lateral rectus muscle is the primary abductor, moving the eye outward (temporally).
A patient with a left superior oblique palsy would show the greatest vertical deviation in which gaze position?
Answer: Right gaze and depression
The left superior oblique is most active in depression and adduction (right gaze for a left eye), so the deviation is greatest in right gaze and depression.
The Maddox rod test is primarily used to detect:
Answer: Heterophoria
The Maddox rod dissociates the two eyes to reveal a latent deviation (heterophoria) that is normally controlled by fusion.
In a patient with a right lateral rectus palsy, the face turn would most likely be toward which direction?
Answer: Right
Patients with a right lateral rectus palsy turn their face to the right to place the paretic muscle out of its field of action, reducing diplopia.
The duction test measures:
Answer: Monocular range of movement
Duction testing assesses the monocular range of eye movement with the fellow eye occluded.