What is the meaning behind the Eye of Horus?

Horus is one of the most significant ancient Egyptian deities, son of Isis and Osiris, worshipped from at least the late prehistoric Egypt until the Ptolemaic Kingdom and Roman Egypt. He was most often depicted as a falcon, or as a man with a falcon head, and was also symbolized by an eye. What is the meaning behind the Eye of Horus?

Robert Sepehr is an anthropologist and author
(books also available through other book outlets)
http://amazon.com/Robert-Sepehr/e/B00XTAB1YC/

Lucifer and the Black Sun
https://www.youtube.com/watch?v=zY8DMV2SY98

Lilith and the Sacred Serpent
https://www.youtube.com/watch?v=7tpihlei9HI

Lucifer and Astrotheology
https://www.youtube.com/watch?v=WWcdCT0favg

Robert Sepehr Links
https://linktr.ee/RobertSepehr

Support Robert Sepehr on Patreon:
https://www.patreon.com/AtlanteanGardens