Eye Tests and Impairment

Wednesday, June 28, 2023 from 12:00 PM to 1:30 PM


PAAM Traffic Safety Training Program Webinar: 

How Do “Eye Tests” in 3-5 minutes Relate to Detecting

Possible Impairment Related to Driving?


Wednesday, June 28, 2023

12:00 P.M. - 1:30 P.M. EST

Law enforcement utilizes a battery of tests to assist in identifying impairment in the skills necessary for safe driving, including a set of selective “eye tests” (e.g., the HGN test, pupil sizes/responses, and lack of convergence).  This webinar will provide an overview of the role of eye movements, convergence, and pupillary changes in detecting alcohol and drug impairment.  The following topics will be explored:

  • What visual abilities are required for safe driving?
  • How are “eye tests” used for the detection of alcohol and /or drug impairment and what is their relationship to driving?
  • How do eye movements work?
  • How do drugs and alcohol affect eye movements?
  • What is Horizontal Gaze Nystagmus and what are other types of nystagmus?
  • How does the brain control eye movements?
  • How do pupils function under different light conditions?
  • What is unique in the DRE protocols for testing pupils?  How are pupil functions affected by drugs?
  • How does convergence of the eyes work and how do drugs affect it?
  • How do changes in “eye tests” relate to impairment in the nervous system?

Presented by Dr. Jack Richman, New England College of Optometry.


There is no charge to attend this webinar, but you must register in advance.  To register for the webinar, go to https://mipaam.zoom.us/webinar/register/WN_cuaTQfHrR_SAEIpaT50neg

After registering you will receive a confirmation email from Zoom with instructions on how to join the webinar.  Please make sure you retain the confirmation email sent to you.  Please be careful to enter your email address correctly.  You will not be able to join the webinar if you do not receive a confirmation email from Zoom. 

This webinar will be recorded. If you will be unable to attend this webinar at the scheduled time but would still like to watch it, please go ahead and register as indicated.  Everyone who is registered will receive a link to the recording of the webinar regardless of whether or not they attended.

Each webinar course is approved for 1.5 hours of credit under PAAM’s recommended CLE Best Practice.


The training handouts, if any, will be made available on the day of the webinar.

If you have any questions or need any assistance registering for the webinar, please feel free to contact Amy Gronowski at gronowskia@michigan.gov or at 517-643-2114.