ABV KMK Ocular Motility Exam Questions & Answers 2024/2025
What are the axes of listings plane? - ANSWERSY: line of sight through center of rotation
X: horizontal
Z: vertical
Muscle plane - ANSWERSDirection of pull from EOM COR/insertion
Axis of rotation - ANSWERSAround which the eye r...
What are the axes of listings plane? - ANSWERSY: line of sight through center of rotation
X: horizontal
Z: vertical
Muscle plane - ANSWERSDirection of pull from EOM COR/insertion
Axis of rotation - ANSWERSAround which the eye rotates when acted by an EOM -> perpendicular to
muscle plane
Tangential point - ANSWERSWhere the muscle 1st contacts the globe
Arc of contact - ANSWERSThe area where the EOM exterts its action: between the tangential point and
point of insertion
Spiral of Tillaux - ANSWERSMR (5.5)
IR (6.5)
LR (6.9)
SR (7.7)
What is the antagonist of the SO according to Sherrington's law? - ANSWERSIO
What is the difference between the VOR and the OKR? - ANSWERSVOR: short head movements (under
30s)
OKR: long head movements (over 30s)
, Velocity of VOR - ANSWERS300 deg/s
Latency of VOR - ANSWERS15 ms
Describe the phases of the VOR - ANSWERSSlow phase: opposite to head movement
Fast phase: same as head movement
Caloric testing: warm water in the right ear -> slow phase will be - ANSWERSWS -> fast phase right so
SLOW PHASE IS LEFT
Null point of nystagmus - ANSWERSNo nystagmus
Neutral point of nystagmus - ANSWERSPoint where nystagmus switches directions
Which is normal? End-point of Gaze-evoked nystagmus? - ANSWERSEnd-point
optokinetic nystagmus vs. optokinetic reflex - ANSWERSOKN: head still, moving object
OKR: prolonged head movement after VOR
velocity of saccades - ANSWERS1000 deg/s
Latency of saccades - ANSWERS200 ms
A lesion in the right FEF will affect saccades to the - ANSWERSLeft (eye will be turned right)
Types of inappropriate saccades - ANSWERSSquare wave jerk
Ocular flutter
Opsoclonus
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