The Eye of Horus is not a simple eye — it is the eye of a falcon, specifically the distinctive eye marking of the lanner falcon or peregrine falcon: the teardrop stripe that runs beneath the falcon's eye, curling outward and downward in the characteristic shape that appears in Horus iconography. This specificity matters: Horus is the falcon god, and his eye carries the specific visual signature of the bird whose extraordinary vision — capable of seeing a mouse from a height of 100 feet — made it the natural symbol of divine sight.
The symbol consists of six distinct parts, each of which was assigned a specific fraction in the Egyptian hieroglyphic system and associated with one of the six senses (the Egyptians counted thought as a sense). The six parts together represent 63/64 — the missing 64th part was said to have been provided by Thoth, the god of wisdom, who completed what could not be completed by human or divine effort alone. This mathematical structure is not accidental; it encodes the teaching that wholeness is always slightly beyond human grasp, and that wisdom (Thoth) is what supplies the remainder.
The left eye — the Eye of Horus, associated with the moon — represents healing, restoration and protection. The right eye — the Eye of Ra — represents the sun and divine power. The two eyes together represent the complete vision of the cosmos: lunar and solar, receptive and directive, the seen and the seeing. When texts distinguish between them, the Eye of Horus is consistently associated with the restoration of what was lost — because the myth of Horus centres precisely on the restoration of his torn-out eye by Thoth.