I'm tracking your eyeballs. You didn't track my eyeballs. You tracked my pen. >> Exactly. >> She was sure she passed the eye test because she followed the pen the whole way. But that test was never about whether she could follow it. The officer was watching for nystagmus, an involuntary jerking of the eye that only shows up once you have been drinking. You cannot feel it, and you cannot feel it, and you cannot fake your way past it. To her, it looked like she passed. To the officer, her eyes had already answered the question. What would you have done? Let us know in the comments and subscribe for more.