akka69, the information you have provided i find truly fascinating, including the last sentence on preference to intense signals. What is the source of your information for further reading?
I agree. People seem to think that all we perceive about the world is dominated by our binocular vision. That view is a naive as saying that the eye is 'like a camera' and leaving things at that. People with vision in only one eye and even people who have never had vision at all, can have excellent spatial perception*. We use countless clues about relative distances, sizes and even masses of objects. This is why we are relatively easily deceived by optical illusions and magicians. But those are exceptions and largely not 'natural'. A quick read through this Wiki article (despite the disclaimer at the top) should be enough to show something of what's really going on when we see a scene and retain it when we leave the room or close our eyes.Humans infer information about depth a number of ways, including the obscuring of far away objects by nearer ones, shadow, and the comparison of the images from both eyes. Depth perception is not destroyed when one eye is closed. Strictly speaking, both eyes report only two dimensional images; the brain constructs what we generously call a 3-dimensional representation much later in the visual stream. It would be a stretch to say that we "see in 3-dimensions".