Auras are seen with peripheral vision (side vision) and cannot be seen by directly focussing on them. To see an aura, you have to look to the side and past your subject. Peripheral vision is extremely sensitive to movement, much more so than direct focussed vision. It can detect minute movements that your central, focussed vision will not see.

Peripheral vision is also sensitive to many other types of subtle energy that surround us.

Most people have had the experience of catching sight of some movement - out of the corner of their eye - only to see nothing when they turn and focus on it.

1. They have seen an aura building up from a coloured object.

2. They have seen a spirit entity (ghost) manifesting near them, and have detected it's energy with their more sensitive, peripheral vision.