If you dart your eyes a bit, all stays visible.
This is good to apply to ourselves as riders.
Keep your eyes moving and scanning.
So eye scanning is normal behavior; IMO the test demands abnormal behavior and is not representative of true sight. Eyes have to scan back and forth for the brain to take in enough information to stitch together a cohesive picture. Try to stare at the dot in the middle and make all the dots disappear for any extended period, very difficult and you have to work at it.
Nice trick though.
=Laserjock=