| This
description of the Horizontal Gaze Nystagmus test
posted by Florida DUI Lawyer
. *
Parks
& Braxton, your best resource for a Florida
DUI Lawyer, wants you to be well informed.
Here is a basic description of the Horizontal
gaze nystagmus test:
- Opto-kinetic
nystagmus can occur when a person focuses on
several objects at one time or objects that
are moving away. An example of this is when
a person looks at objects out the window of
a fast moving train. This is the reason that
officers are instructed that the quiet background
to perform this test should be away from the
view of passing motorists and bright or rotating
lights.
-
Nystagmus is the involuntary jerking of the
eyes. The first clue is known as Smooth Pursuit.
The officer is looking for the suspect's inability
to pursue a moving stimulus smoothly while focusing
the stimulus being moved horizontally, from
side to side. If the suspect moves his head
to the side at any time, the test is invalid
and should not be scored.
*
This material is for informational purposes only.
If you want to know how the SFST tests affect
you, please contact Florida
DUI Lawyers, Parks &
Braxton
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