Dr. Douglas M. Baker's The Opening of the Third Eye is a practical guide exploring the activation of the 6th chakra (Ajna) to enhance intuition, clairvoyance, and spiritual awareness. It details how the third eye links to the pineal, pituitary, and carotid glands, offering five safe, tested techniques for awakening this center to perceive subtler, hidden structures of reality. The book is aimed at those seeking to understand the "subtle anatomy" and how to safely navigate the awakening of the third eye without hazard.