Marijuana Intoxication: Roadside Tool for Law Enforcement to Measure Impaired Peripheral Vision

Goal Specific to NIJ Forensic Technology     To provide evidence and proof of concept to support an easy, portable, reliable, safe and robust roadside device to test for marijuana use, including the scientific foundation for the device and data to support the metric for THC/marijuana related measure of impairment.

Goal    We will determine the relationship and efficacy of using a simple off the shelf virtual reality goggle test of visual field functioning, programmed with IMMAD-VR, to determine impairment to drive.  IMMAD-VR displays small striped squares of variable contrast stripes.  Participants press a button when they see the striped squares.  Testing with the proposed prototype IMMAD-VR takes four minutes per eye.  A final version for future testing, will use the same technology but utilizing accumulated data, will be a shortened version taking two minutes per eye and adapted into a collapsible free-standing module with driver placing face into module and utilizing a touch board rather than officer placing the existing virtual goggle onto the driver and driver having a Bluetooth button in hand.  To expediate through the FDA required clinical studies of efficacy, we will be using the off the shelf Pico Neo Three virtual reality goggle as it is already FDA approved for use in testing visual field related to eye disease in three different products. CA/NCF