How does the narrator distinguish himself from madmen in The Tell-Tale Heart?

Answer 1

The only description given is: "He had the eye of a vulture --a pale blue eye, with a film over it." The fact that he fails to even recognize the old man in any other way is an indication of how obsessed the narrator is with the "evil" eye.

Answer 2

The narrator in "The Tell-Tale Heart" distinguishes himself from madmen by asserting his sanity and describing his meticulous planning of the murder. He believes that his heightened senses and calculated actions prove his rationality, despite his obsession with the old man's eye. In his mind, he is in control of his actions and not driven by irrational impulses like a madman.

Answer 3

the old mans eye disturbs him