The only ones who can truly see are blind. This is a popular theme through out Greek literature, especially in “Oedipus Rex” where Sophocles nurtures the idea that real sight does not require eyes but the ability to see beyond the surface of things. According to Sophocles, one must not only be able to see something, but one must also be able to understand it. Teiresias, the only physically blind character, is the only person that throughout the play can actually see what has, is and will happen. Oedipus himself only truly achieves this state of knowledge after he blinds himself with his mother’s/wife’s broach. Light and darkness (sight and blindness) takes on three different forms throughout the play, the first form refers to knowledge, the second to physical light and the third to truth; the three forms are used interchangeably and they occasionally refer to multiple interpretations at the same time.