The Eye of Horus (formerly 'Eye of the Moon' or 'Eye of Ra') is called the 'Udjat' in the ancient Egyptian Language. It is an ancient Egyptian symbol and emblem with amulet properties, used to protect against envy, evil spirits, harmful animals, and disease.
It is adorned in the form of a necklace as it expresses royal power derived from the gods Horus or Ra. It is a solar symbol, which embodies order, rigour, and idealism. This necklace was also placed on the chest of mummified pharaohs to protect them in the tomb. The ancient Egyptian artist excelled in making the Eye from gold and forming it so that it bears pictures of Horus and Ra and the symbols of life (Ankh), permanence (Jet), and protection (Sa). The octagons were a symbol to indicate global and international stability during the era of the pharaohs.
The Eye of Horus was first used as a magic spell when Horus restored the life of his father, Osiris. It was prevalent in ancient Egypt and was considered a talisman in the hands of influential people. The Eye strengthens eyesight, treats vision diseases, resists envy, and also protects the dead during their journey in the afterlife. As a result, it is still used as an amulet by people of various religions worldwide.