HGN (4/6 clues=77% chance)

Question 1

Set Up

Answer 1

1) Remove eye wear
2) Contacts?
3) Hands at side, feet together
4) Tracking ability (2secs full pass)
5) Pupil size

Question 2

Lack of smooth pursuit

Answer 2

2 seconds out 2 seconds in. (each eye 4

seconds)

Question 3

Distinct and sustained nystagmus at maximum deviation

Answer 3

Hold at maximum deviation for minimum of 4 seconds

Question 4

Onset of nystagmus prior to 45 degrees

Answer 4

4 seconds to 45 degrees