It refers to horizontal or lateral jerking of the driver’s eyes as he or she gazes sideways following a moving object such as pen or the tip of a penlight held by the LEO from a distance of about one (1) foot away from the face of the driver. It refers to horizontal or lateral jerking of the driver’s eyes as he or she gazes sideways following a moving object such as pen or the tip of a penlight held by the LEO from a distance of about one (1) foot away from the face of the driver.

• A. the eye test (horizontal gaze nystagmus)
• B. the eye test (horizontal gaze optical illusion)
• C. the eye test (horizontal gaze astigmatism)
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  The correct answer is A

   

  Field sobriety tests refer to standardized tests to initially assess and determine intoxication, such as the horizontal gaze nystagmus, the walk-and-turn, the one-leg stand, and other similar tests as determined jointly by the DOH, the NAPOLCOM and the DOTC.