POSITIONAL NYSTAGMUS IF THE NYSTAGMUS OCCURS AS A

POSITIONAL NYSTAGMUS IF THE NYSTAGMUS OCCURS AS A RESULT OF THE NEW STATIC POSITION, THE NYSTAGMUS IS CALLED POSITIONAL. .

THE POSITIONAL TEST BATTAREY SUPINE HEAD RT HEAD LT BODY RT BODY LT

POSITIONAL NYSTAGMUS OF CENTRAL ORIGIN POSITIONAL NYSTAGMUS IS ALWAYS PATHOLOGICAL AND OF CENTRAL ORIGIN IF: IT CHANGES ITS DIRECTION WITHIN A SINGLE POSITION, IF NYSTAGMUS PERSISTS WITH OPEN EYES ONLY OR IF IT IS STRONGER WITH OPEN EYES OR IF ITS SPV IS EQUAL WITH OPEN AND CLOSED EYES.

CENTRAL POSITIONAL NYSTAGMUS. SPV WITH OPEN EYES IS GREATER

NON LOCALIZING NYSTAGMUS SPV IS GREATER WITH CLOSED EYES

POSITIONAL NYSTAGMUS IN DARKNESS OR WITH CLOSED EYES POSITIONAL NYSTAGMUS, RECORDED IN DARKNESS IS A SIGHN OF PATHOLOGY IF: 1. THE DIRECTION OF THE NYSTAGMUS CHANGES WITHIN A SINGLE HEAD OR BODY POSITION / CENTRAL ORIGIN/ 2. THE SPV OF NYSTAGMUS IS GREATER THAN 3 DEG/SEC IN AT LEAST 3 POSITIONS. /NON LOCALIZING PATHOLOGY/. 3. THE SPV OF THE NYSTAGMUS EXCEEDS 6 DEG/SEC IN A SINGLE POSITION. / NON LOCALIZING PATHOLOGY/.

POSITIONAL NYSTAGMUS MAY BE DIRECTIONAL FIXED AND DIRECTIONAL CHANGING.

POSITIONAL NYSTAGMUS MAY BE DIRECTIONAL FIXED AND DIRECTIONAL CHANGING.

DIRECTIONAL FIXED POSITIONAL NYSTAGMUS DOES NOT CHANGE ITS DIRECTION WITH CHANGING OF THE BODY POSITION.

DIRECTIONAL FIXED POSITIONAL NYSTAGMUS

DIRECTIONAL CHANGING POSITIONAL NYSTAGMUS CHANGES ITS DIRECTION WITH CHANGING OF THE BODY POSITION.