The eye pillow is in our opinion the humblest of all Yoga props and yet one of the strongest. Moral of the story? Do not underestimate that which you do not understand or know. The eye pillow exerts a gentle pressure on the " Third Eye " area. This area is found just above the eyebrows and in the middle of the two eyes. It is also the area of the Pineal gland, also known as 'The seat of the Soul" by philosopher Descartes. The main function of the pineal gland is to receive information about the light-dark cycle from the environment and to convey this information to produce melatonin. Melatonin is associated with control of the sleep -wake cycle and is often used as a supplement in the treatment of insomnia. Adding to this, gentle pressure on the eyeballs from an eye pillow, lowers the heart rate and stimulates an oculocardiac effect. This effect also stimulates the Vagus nerve, sending calming messages down the back of the neck to the shoulders and chest .... how delicious!! 
Then, in the Yoga world, there is also Pratyahara which is the withdrawal of senses ' from the body. This practice facilitates the journey into a deeper world where there are no ' to do ' lists, no offending noises, and other distractions ......again How Delicious!!! How can you not admire the humble eye and all the benefits she brings