Keeping an Eye on the Road
Peripheral vision is your early warning system, keeping you constantly up-to-date on rapidly changing conditions in your big picture. This early warning system is triggered by color, motion, and light. But it will not be triggered if the eyes are in a fixed or blank stare.
If you try and focus your eyes on one word in this line of type and then try reading the rest of the line on the page without moving your eyes. The remaining words are out of focus. Without moving your eyes, you can’t read them clearly. If you continue concentrating your central vision on that one word your peripheral vision becomes increasingly less effective, especially at its outside borders.
This is a reminder that when you’re driving, letting your eyes pause on any object for more than 2 seconds can be a major distraction.