Teiresias is a blind prophet of Thebes. He was the son of Eueres, a shepherd and Charicloa, a nymph, a minor goddess or spirit of nature.There were several reasons for his blindness.
1. Teiresias accidentally saw goddess Athena bathing and she blinded him. Teiresias’s mother begged Athena to undo her curse but she could not. Instead, she gave him the gift of prophecy and a life seven generations longer. After Athena cleaned his ears and gave him the ability to listen to bird song, Teiresias was able to interpret the will of the gods by studying the flight of the birds.

2. Teiresias saw two snakes coupling and killed one of them with a stick. Hera, the goddess of marriage and woman was displeased and transformed him into a woman. Teiresias became the priestess of Hera, got married and had children. After seven years, he met mating snakes again and struck it. As a result, Teiresias was free from his punishment and regained his masculinity.
3. There was an argument between Zeus and Hera about who has more pleasure in sex Zeus thinks that the woman had more pleasure while Hera thinks it is the man. As Teiresias has experience as both man and woman, Teiresias was questioned. Teiresias reveal women’s secret where woman enjoy greater pleasure compared to man. Hera instantly struck Teiresias blind because of his disrespect. Zeus could not do anything but compensated him with a gift of prophecy and a life of seven generations.
Teiresias name appeared in several Greek tragedies in the history of Thebes.
In The Bacchae, by Euripides, Tiresias appears with Cadmus, the founder and first king of Thebes, to warn the current king Pentheus against denouncing Dionysus as a god.
In Oedipus the King by Sophocles, Oedipus, the king of Thebes, calls upon Tiresias to help him in the investigation of the killing of the previous king Laius. Teiresias revealed that it was Oedipus himself who single handedly killed his father, King Laius.
In Aeschylus' Seven Against Thebes, Megareus kills himself because of Tiresias' prophecy that a voluntary death from a Theban would save the city.
In Antigone by Sophocles, the gods express their disapproval of Creon's decision through Tiresias. However, it was ignored, resulting in many deaths.
Teiresias died when he was struck by an arrow of Apollo at the spring Tilphussa.