OTHER OCULAR MOVEMENT DISORDERS

 

SACCADIC INTRUSIONS AND OSCILLATIONS

 

Square-wave jerks

(Video 1, 2, 3, 4

 

Square-wave pulses

(macrosquare-wave jerks)

(Video 1, 2, 3

 

Macrosaccadic oscillations

(Video 1, 2)

Ocular flutter

(Video 1, 2, 3, 4, 5, 6)

Intermittent ocular flutter

 

Benign neonatal ocular flutter

Benign opsoclonus (developmental)

 

Opsoclonus

(Video 1, 2, 3, 4, 5, 6, 7, 8)

 

Opsoclonus-myoclonus syndrome

(Video 1, 2, 3, 4)

 

Oculopalatal myoclonus/tremor

(Video 1, 2, 3, 4, 5) 

 

Ocular bobbing

(Video 1, 2) 

 

Ocular dipping

(Video 1, 2, 3, 4)

 

Reverse ocular dipping

(Video 1, 2) 

 

Convergence-retraction nystagmus

(induced convergence-retraction)

(Video 1, 2, 3, 4

 

Oculomasticatory myorhythmia

(Video 1, 2)

 

Superior oblique myokymia

(Video 1, 2, 3, 4, 5)

 

Inferior oblique myokymia

 

Superior and inferior oblique myokymia

Heimann-Bielschowsky phenomenon

(monocular vertical oscillations of amblyopia)

GENERALIZED DISTURBANCE OF VESTIBULAR EYE MOVEMENTS

 

Vestibular nystagmus following Alexander’s law

(Video 1, 2, 3)

 

Horizontal (left) canal  BPPV)

(benign paroxysmal positional vertigo)

 

Posterior (right) canal BPPV

 

Posterior (left) canal BPPV

 

Anterior (right) canal BPPV

 

Positive Dix-Hallpike test to the right

(Video 1, 2)

 

Positive Dix-Hallpike test to the left

 

 

Positive head impulse (Halmagyi) test

(Video 1, 2, 3, 4, 5, 6)

 

Ocular tilt reaction

(Video 1, 2, 3)

 

OTHERS

 

No or slow saccades

 

Saccadic dysmetria

(ocular dysmetria)

 

Disturbance of smooth pursuit

(saccadic or cogwheel)

(Video 1, 2, 3)

 

Disturbance of optokinetic eye movements

 

Ocular motor abnormalities in Joubert syndrome

Blink-associated contralateral eccentric saccades

Oculogyric crisis

(Video 1, 2, 3)