Evil eye is believed to watch out for and provide protection against evil spirits and negative energies. Its presence is like a barrier against harm of any kind, and it sends the negative energy away or reflects it back.
It is believed that if bad energy is directed towards you, the evil eye works to ward off that pessimistic energy, and offers a shield of positivity and healing.
However one may interpret this symbol, it overall serves as a reminder that you are always protected by divine forces and/or higher beings.
