The eye of Ra represents the right eye, and the eye of Horus the left eye. Ra is the sun god, his power is quite close to the almighty gods of the monotheistic religions.
Moreover, what is the Eye of Horus magic?
The Eye of Horus is an ancient Egyptian symbol known all around the world. It symbolises healing, protection, rejuvenation, rebirth, resurrection and wholeness. The symbol combined art, anatomy, science and mythology. It is sometimes called the all-seeing eye as a reference to the third eye.