Please explain the reoccurring theme (sub-textual idea) of "blindness" in the play Oedipus.  What was the reason behind it?  Use examples from the play to support your answer. Be as complete as possible (1-2 paragraphs) the play is in the attachment. .

1. Please explain the reoccurring theme (sub-textual idea) of
"blindness" in the play Oedipus. What was the reason behind
it? Use examples from the play to support your answer.
Be as complete as possible (1-2 paragraphs)
the play is in the attachment.