ive read many techniques and such on how to see auras, and it worked... but then i got a little skeptic and wasnt sure if its just an after image...
like, if you look at a light and then look somewhere else, you see the shape of the light with a bunch of colors, which resemble an aura... how do you know auras arent that?
but then again, when i see "auras" on people it leaves a trail... and im not sure if light does that. so its kind of confusing... i dont know, what do you think?
What happens with light is. Your eyes have cones, these are what allow you to see different color. When you take in too much light, these cones basicly deplete and leave you seeing spots.
Really, if you are seeing aura's then I don't see how it could be the same as the cones in your eye contracting.
Auras are generally one color and change based on emotion. So if you see just one color, then you know that is isn't because of too much bright light.
afterimages or similar physical vision distortions are rather sharp edged and they move when you move your eyes or you head, they also change size when you manipulate the sharpness of your vision.
in case of the etheric aura or similar energy you may also be able to affect it's 'shape' by will. say you create an energy band between thumb and index finger. it behaves like a liquid substance or chewing gum. it get's thinner in the center and splits with a certain distance.
that's what i saw. but maybe my vision distorions are intelligent and can emulate energy