Bunnies are experts making a "mental map" so that even when their vision isn't the sharpest at times, they still can easily get around. It's part of their prey nature, their instincts to be able to do this.
You may notice that when rabbits spot something new in the room, the first thing they want to do is figure out what it is and where it is. They will go around it, through it, and over it several times to make a it part of the mental map.
A rabbits survival depends on them knowing where things are at all times even when they can't see things so well. That's when their whiskers come in handy to help confirm when they reach an object, a wall, a bed etc, etc, etc.