The Evil eye; just what is it that causes such powerful superstitious beliefs? By Twinty Karat. The evil eye is a look that is superstitiously believed by many cultures. Believers in the evil eye superstition believe the evil eye look is able to cause injury or bad luck. That is, to the person at whom it is directed for reasons of envy or dislike. The term also refers to the power attributed to certain persons of inflicting injury or bad…