Dramatic irony is a literary device in which the audience has more knowledge about the story than the characters. When dramatic irony is employed, the reader knows what is going to happen later in the story, but the characters do not, which leads them to act in ways that would not make sense if they possessed the same knowledge. Therefore, if you were to rewrite the introduction using dramatic irony, it would look something like this:
"The Straw, a play by Eugene O'Neill, is set in a factory town in Connecticut around the year 1910. At the opening of the play, Bill Carmody is waiting for Doctor Gaynor to finish examining Carmody's daughter Eileen. Carmody, a widower, called the doctor in earlier, when Eileen fainted. Eileen will most likely be sent to a sanatorium. However, she does not know that the love of her life is waiting for her there."
