After finding out that it is possible to see touch by closing the eyes and lightly pressing in on them (the stimulus this time being touch instead of light, will be perceived and interpreted by the brain as amorphous lights or spots, try it yourself if you don't believe) I thought it might be possible to do something of a similar fashion with auric sight. How would it be possible to receive feedback of an aura's presence with the eyes closed? In the same way that our eyes can give us feedback in the form of visual output(amorphous lights) of the fingers pressing against the eyes(touch), perhaps the brow chakra can give us some kind of feedback of the presence of the subtle energies it receives with the physical eyes closed.
Like the touching the closed eyes experiment we could close the eyes and this time, open and active the brow chakra and place it touching against the aura. Doing so could provide some info on about how closely related the two structures, eyes and brow chakra, function. Give me a hollar if you are willing to try this out with me.