HGN
Horizontal Gaze Nystagmus
Administering HGN/ VGN test
12-15” from face
Horizontal Plane
Slightly above eye level (eye brows)
- 2x passes equal tracking
- 2x passes lack of smooth pursuit
- 2x passes Distinct and sustain nystagmus at maximum deviation
- 2x passes onset of Nystagmus prior to 45 degrees
- 2x passes for vertical gaze nystagmus (VGN)
= 10 total passes
(4/6 CLUES NEEDED FOR IMPAIRMENT)
Walk and Turn Test (WAT) clues
How many clues are needed for impairment during HGN/VGN?
4 out of 6
How many clues are needed for impairment for Walk and Turn test?
2 out of 8 needed
How many clues are needed for impairment for One Leg Stand test (OLS)?
2 out of 4 needed
What are the clues during One Leg Stand (OLS) test?
Final Four (instructions) for Walk and Turn Test