grading jerk nystagmus
Last reviewed 03/2023
Jerk nystagmus may be graded as follows:
- first degree nystagmus is present only when looking in the direction of the quick component
- nystagmus is second degree if it is also present when looking straight ahead
- third degree nystagmus is where it is present when looking in the direction of the quick component, when looking straight ahead and when looking in the direction of the slow component