1

What is the test?

The Horizontal Gaze Nystagmus test is one of only three standardized field sobriety tests (SFST) used in the state of Georgia to gauge a driver's ability. You may have also heard it called the "follow this pen with your eyes" test.

2

What exactly is "Nystagmus"

It is the involuntary jerking of the eyes that can be sometimes caused by excessive blood alcohol.

3

Can other things cause Nystagmus?

Yes! Lack of sleep, caffeine and cold remedies are the most common reasons. Some of these factors exist in the overwhelming majority of DUI cases.

4

If I fail this test, will I be arrested?

Possibly. But it is important to remember that SFSTs are designed only to be used in deciding whether to arrest an individual, not as substantive evidence at trial.

5

As always...

You should consult a local DUI attorney to find out your rights.