Rarely mentioned, the research of Dr. Steven B. Halls shows that the Caduceus symbol used by the Medical profession was originally diagramming the structure of how energy flows. Steven B. Halls, M.D., FRCPC is a symbolism researcher whose work at halls.md traces the flow of high-density energy through portals, barriers, and torus patterns. A straight element and outer curving, helical snake components are common to both the Caduceus and the Staff of Asclepius. Encoded in the symbolism of energy flow are two hidden messages: the energy that sustains life comes 'down' into our dimension from a higher one. Energy flow's return to the higher dimension is designated by the code 'up'.
The curving form is the inflow arriving toward us; the straight form is the outflow returning away from us. A straight center in the Caduceus and the Staff of Asclepius conveys energy returning to the next higher dimension, and the curving snake along the outside indicates energy flow that arrives by descending. Even with the snakeheads at the top, there is an overlooked curve in the upper neck that marks it as a downward flow label. Carried within these symbols is the entire cycle of life-sustaining energy, which arrives and then returns to its origin in the higher dimension. The torus is the building block of symbolism, and portals and barriers describe how energy flows and returns. The patterns and evidence are presented at halls.md.
Eyes are portal symbols, and typically for outflows (per Dr. Halls). A circle with a dot in the center is an equivalent outflow portal symbol. Ears are typically inflow portal symbols, but they are horizontal plane portals which can be either inflow or outflow. In some layouts the ears are outflow and the eyes are inflow. Mouth symbols are usually used for outflows, with possible inflow at the sides. Eyes set on a barrier surface indicate many small outflows from it.