Well in this article,I would think the eyes are so near the brain,its why they reflect conciousness ?
But once again,modern medicine figures out something the Chinese knew 4000 years ago !
In Chinese medicine,our soul is called the shen.
It's not exactly the same definition as soul,but more like our personality and what type of person we are,is determined by our shen.
The shen likes to reside in the heart,but its state is reflected in our eyes.
So to look into the eyes,is to see into our heart and soul.
Medical inferences are made by looking into the eyes as well.
Disturbed shen makes the eyes look askew,or dull.
This is easily noted in people with psychological disorders.Their eyes never look right.
If someone's eyes seem off to you,keep walking .
http://www.sacredlot...theory/shen.cfm