CH13: Ocular Movement and Pupillary Function

Question 1

Quick eye movements whose peak velocity may exceed 700 degrees per second (p. 273)

Answer 1

saccades

Question 2

Interval between the appearance of a target and the initiation of a saccade (p. 273)

Answer 2

200ms

Question 3

slower and smoother pursuit movements stabilizing the image of an object that is mocing (p. 274)

Answer 3

pursuit

Question 4

saccades initiation localization (p. 273)

Answer 4

Area 8 of the forntal lobe

Question 5

pursuit localization (p. 274)

Answer 5

ipsilateral parietooccipital cortex

Question 6

bundle of saccades fibers (p. 274)

Answer 6

capsular peduncular bundle and transthalamic bundle

Question 7

three integrated structures for vertical gaze (p. 276)

Answer 7

riMLF, INC, nucleus and fibers of PC

Question 8

ocular apraxia of childhood (p. 277)

Answer 8

Cogan syndrome

Question 9

T/F pontine gaze palsies tend to be longer lasting than those of cerebral origin (p. 278)

Answer 9

TRUE

Question 10

Percent of adult not demosntrating Bell’s phenomenon (p. 279)

Answer 10

15%

Question 11

eye is lower or higher: lateral medullary infarction (p. 280)

Answer 11

LOWER

Question 12

eye is lower or higher: MLF or INC (p. 280)

Answer 12

HIGHER

Question 13

Vergence movements are under the control of medial rectus neurons, unpaired. (p. 280)

Answer 13

Nucleus of Perlia

Question 14

muscle imbalance that results in misalignment of the visual axes (p. 282)

Answer 14

Strabismus

Question 15

Normal slight exotropia of neonates are corrected by what age (p. 283)

Answer 15

3 months of age

Question 16

Compensatory head tilting to the opposite shoulder brought by a CNIV lesion (p. 284)

Answer 16

Bielschowsky sign

Question 17

Sixth nerve palsy from DM is ususally painful at the onset (p. 287)

Answer 17

TRUE

Question 18

mitochondrial defect in mendelian inheritance pattern occurs with POLG1 and twinke gene mutations (p. 289)

Answer 18

Progressive External Ophthalmoplegia

Question 19

Law stating vestibular nystagmus of peripheral origin beats in most cases away from the side of the lsion and increases as the eyes are turned in the direction of the quick phase (p. 292)

Answer 19

Alexander Law

Question 20

T/F in brainstem and cerebellar origin, nystagmus changes according to the direction of the gaze (p. 292)

Answer 20

TRUE

Question 21

A type of nystagmus described as course and bilateral horizontal with an amplitude higher to the side of the lesion (p. 293)

Answer 21

Brun’s nystagmus

Question 22

A type of pendular nystagmus accompanied by head nodding, and occasionaly by wry positions of the neck (p. 293)

Answer 22

Spasmus mutans

Question 23

Eye movements that are continuous and chaotic, without an intersaccadic pause (p. 294)

Answer 23

Opsoclonus

Question 24

Intermittent bursts of very rapid horizontal oscillations around the point of fixation (p. 294)

Answer 24

Ocular flutter

Question 25

normal number of blinking per minute (p. 295)

Answer 25

12- 20 times per minute

Question 26

Blepharospasm with dystonic grimacing movements of the lower face (p. 295)

Answer 26

Meige syndrome

Question 27

Patient continues to blink with each tap on the forehead or glabella (p. 295)

Answer 27

Myerson sign

Question 28

Aberrant regeneration of the third nerve after an injury wherein the upper lid retracts on lateral or downward gaze (p. 295)

Answer 28

pseudo von Graefe sign

Question 29

Retraction of the upper lids with a staring expression (p. 296)

Answer 29

Collier sign

Question 30

Delayed relaxation of the eyelid on attempted downgaze (p. 296)

Answer 30

von Graefe sign

Question 31

rapid flactuation in pupillary size common in metabolic encephalopathy (p. 297)

Answer 31

Hippus

Question 32

MGP vs hippus

Answer 32

In MGP, initial movements are in dilation (p. 297)

Question 33

How to localize the lesion of the sympathetic chain based on sweat (p. 297)

Answer 33

CCA: loss of sweating entire side of face

Question 34

How to localize the lesion of the sympathetic chain based on sweat (p. 297)

Answer 34

Distal: no or just in the medial

Question 35

Afferent arm of the ciliospinal pupillary reflex (p. 298)

Answer 35

C2, C3

Question 36

Characteristic of Adie- Tonic Pupil (p. 299)

Answer 36

Once constricted, tends to remain tonically constricted and redilates very slowly

Question 37

Adie- tonic pupil is unusally sensitive tothis drug (p. 299)

Answer 37

Pilocarpine 0.1 %

Question 38

Absence of knee or anke jerks + Adie's pupil (p. 299)

Answer 38

Holmes- Adie Syndrome

Question 39

Percent of people with inequality of 0.3 to 0.5 mm or more in pupilary diameter (p 299)

Answer 39

20%

Question 40

light exaggeraes anisocoria caused by third nerve, darkness accentuates anisocira in case of Horner syndrome (p. 299)

Answer 40

TRUE

Question 41

this drug causes reversal of miosis on affected side of Horner syndrome (p. 300)

Answer 41

Apraclonidine