you mean your brown eye??? hehe just kidding
did you ever hear of trepanation?? they cut a hole in your skull to open your third eye. no thanks for me
but heres some info from Jane Roberts "Seth material"
when your soul leaves your body you will have 360 degree vision not only left and right but up and down and all around. sight is very different in true soul form. most astral travellers use only memory of regular eye vision because they cant comprehend 360. also the true sould form is more like a gas cloud than a body and many of the senses we use here arent needed on the other side.