I've previously used the EyeQue Personal Vision Tracker; can I skip the practice test?

No, because of the VisionCheck's design we require that everyone go through the VisionCheck practice test.  The practice test will take the user through how to adjust their pupils to the slits on the top of the device, how the touch sensors work and also will guide the user through their first refractive measurement for the left and right eye.  While the basics of the VisionCheck's vision test are the same, the process of taking the test is different with the device.  It is strongly encouraged to take the practice test again if you do not feel comfortable with testing process.