The human eye is almost entirely irrelevant, the aura one observe is not actual light reflected in the VR, but NPMR information that is overlaid to our visual perception. You do not really see with your eyes either, it's happening in the brain. Since it's a constraint of the brain, and not the eyes, it easily falls within of what is possible.
There are many possibilities, see this post of Tom:
Good to have you in the discussion group.
I first noticed "borders" many years ago -- within a month or two of borders I was seeing colored auras (The "emotional body" on the "astral plane' to use Hindu metaphors) -- just dimly and intermittent at first, but within a few weeks, more steadily and more under control. It's basically the same thing that you and the others are now doing with borders -- you just need to focus your intent a little more precisely. Think of a person inside of a large translucent colored cloud in the shape of an Easter egg; intend that the colors represent the emotional energy body of the person your intent is attempting to observe. The person need not be physically present -- but that a physical presence may help focus your intent in the beginning by simplifying the complexity of your intent. Or when sitting in a darkened movie theater, intend to see the emotional energy bodies of everyone at once -- that's a colorful sight -- I believe that was the circumstance wherein I first noticed the astral energy-body. After you have that one down, focus your intent to see the light patterns that represent an individual's spiritual quality. If interpreting colors and structural form is not your thing (makes a poor metaphor for you to work with, just request the data to be displayed in the graphical form of your choice (color graphics are fine but black and white work as well -- not so pretty or elegantly displayed, nor can it show as detailed information as a full color picture, but it is functional. It will take you a long time to figure out what it all means but that is what exploration is all about. Have fun." viewtopic.php?f=4&t=2014&p=3666&#p3666
For you second question, (in addition to Mike's answer) do a search for "PSI uncertainty principle" or "PUP", it has been discussed extensively on the board, there should be posts answering your question and more.