horizontal gaze nystagmus test
- An examination to detect signs of impairment by observing erratic eye movement as they track side-to-side motion, often used during a traffic stop
- The officer utilized the horizontal gaze nystagmus test to confirm their suspicion of the driver's impairment.
- The results of the horizontal gaze nystagmus test indicated signs of intoxication.
- She was unable to complete the horizontal gaze nystagmus test properly, suggesting she might be under the influence.
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