His physical loss of sight is penance for the lack of insight he had at the start of the play. He has exchanged physical sight for mental insight into the truth.

4. Rhetorically, Oedipus uses the diction of a king at the beginning of a play. He plays the role of one in power, and of a person in full control of and with confidence in himself. When his people approaches him with a problem, he therefore reacts with confidence that he can solve it. He is fearless and strong in his position, as shown in lines 10-15. He is so confident that he can take care of any problem that he promises to do so even before hearing what the trouble is. Indeed, he believes that the only thing that can possibly keep him from helping the supplicants with their problem would be the hardness of his heart. This...
[ View Full Essay]