Eye of Ra
The tears of the Eye of Ra are part of a more general connection between the eye and moisture. In addition to representing the morning star, the eye can also be equated with the star Sothis (Sirius). Every summer, at the start of the Egyptian year, Sothis's heliacal rising, in which the star rose above the horizon just before the sun itself, heralded the start of the Nile inundation, which watered and fertilized Egypt's farmland. Therefore, the Eye of Ra precedes and represents the floodwaters that restore fertility to all of Egypt.