"Today we are going to understand the center of Agnya - Agnya Chakra which is placed on the crossing of the optic chiasma. The nerves that supply the eyes go backwards in the opposite direction and wherever they cross, this subtle center is situated. It has a continuous connection with the other center through the medulla oblongata. This center has got two petals. And this subtle center on one side acts through the eyes and at the back of the head where you have some protrusion. This is the physical side of this center is. Now the people who talk of the third eye, this is the third eye. So that we have two eyes with which we see and there’s a third eye, which is a subtler eye through which we can see.
If you see this eye, that means you are away from it. For example, if you can see your eyes, that means you are seeing your reflection, not the reality. If you see anything, that means you are looking at it. So those people who say they see an eye, for example people who take LSD and all such things, they start seeing another eye. They just see this eye and they think their third eye has opened. Actually you are very much away from the eye, that’s why you can see it. You go to a supraconcious level on the right side, and on the left side to the subconscious level you can see the eye. But in Sahaja Yoga you have to see through that eye, like a window, you can look at the window but if you see through the window, you can’t look at the window. So this illusion that people have that “we can see third eye and that’s why our Kundalini is awakened”, they are sadly mistaken.
This is a very narrow passage through which attention cannot pass normally. Is an impossible thing. Is a very narrow passage where the ego and superego fit onto each other and cross each other just like this. And there is no gap in between for the Kundalini to pass through. This superego and ego go back, go downward, and come to the Vishuddhi Chakra and circle round it and go in the same direction. So, you find that they come up to this place, they start from this place, go up to the Agnya Chakra and then they cross over. But here, they are in the same direction as they were. Here they cross over. So when you have a problem on the left hand side, you get the effects of that on the right hand side. ... So this third eye is to be penetrated through."
(H.H.Shri Mataji Nirmala Devi, Talk on Agnya Chakra, Delhi, 1983)