Worlds Within Season 2 [Episode 2]

Ancient religions throughout time encourage us to go within. But what does this really mean?
What biological capacity do we have to look within ourselves? What are we using to look within and where exactly are we looking? If our primary organ for the act of looking into the world is the eyes, then what role do they play in the actual act of looking within?

Are we using our physical eyes? Is it really just a matter of closing them? Does the role of our eyes get overshadowed by new age ideas that the awakening of the third eye is more essential? How does understanding the anatomy of the eye connect us with the spiritual role that they play?