I think by now almost everyone has heard about the idea of a third eye located between your eye brows
Some say it is esoteric and should be seen symbolically, others yet point to the pineal gland and its mysterious functions. I have even heard about some research which suggests that this gland may be able to stimulate the areas of the brain used for sight, which would explain its connection to the eyes...
This is a digital painting dedicated to this topic, I hope you enjoy it! :)
Digital Art with Procreate