I noticed that when I ride at 5 MPH or 30 MPH the clarity length of my vision is the same. As I go faster, I would expect to get a bit of tunnel vision. Basically my peripheral vision would get a bit fuzzy as well as how far out that I can see.
I notice that the depth of vision get blurry at the same point whether I am moving or not. I would expect that would dynamically change as speed increased.
Now all of this may be because I have a lower end video card in my windows laptop.