Picture here is an image of The Egyptian symbol of the Eye of Horus. It represents good health, political power, and safety. It was worn as an amulet by those in power (Pharohs and royalty). Interestingly it was used as a measuring device because of its proportion, which are also symbolic in nature. The eye can be split into 6 distinct pieces, pictured here:
These pieces represent the 6 senses (one more than we are accustomed with.
1. Touch 2. Taste 3. Sound 4. Sight 5. Smell 6. Thought
In egyptian culture it also represented the sun while the Eye of Ra represnted the Moon.