It becomes visible in states of deep meditation. This point is known as the Christ center, or, in Sanskrit, as Kutastha Chaitanya. It is here that the meditator, when deeply concentrated, beholds the spiritual eye or third eye, a phenomenon that has been known since ancient times. Legends thousands of years old describe this third eye as being situated in the center of the forehead. Artists have depicted it as a half moon.
Modern scholars dismiss the entire concept as fanciful, or as merely symbolic.
The spiritual eye may have appeared to them during early attempts to calm their minds, or even as they were on the point of falling asleep. The spiritual eye is a reflection of the astral light in the medulla oblongata. The Christ center, where it resides, represents the positive pole of the medulla which is, as I said earlier, the seat of ego-consciousness. When this light is beheld perfectly, it takes the form of a five-pointed star set in a field of deep blue or violet light, and circled by a shining ring of gold. In a state of ecstasy, the consciousness penetrates the spiritual eye and enters the inner realms.