At almost every stages of human history, man has looked for the assistance of magic objects called talismans to  defy evil forces.  Talismans with letters, numbers or abstract signs have survived  to this day. Even the modern religions with a single god have their own symbols. One of these symbols we find in almost every culture and faith for thousands of years... 
It’s the figure of eye...
It's believed that there are three types of evil eyes: The first are unconscious evil eyes. These harm people and things, without intending to. The second type intends to harm. The third one is unseen, hidden evil which is the most scared one. In daily life you can find glass evil eye charms almost everywhere. People donate everything they love or appreciate with these blue evil eye charms. They attach an eye bead to the clothes of a new-born baby. They buy gifts with an eye bead for their sweethearts. They bring gifts with eye bead for a new office or a new car. Almost everywhere you see thousands of blue eyes, that aim to stop the evil eyes with an eye amulet.