Why does the narrator kill the old man in The Tell-Tale Heart by Edgar Allan Poe?

Oh, dude, the narrator kills the old man because of his "vulture eye" that freaks him out. Like, it's all about that creepy eye that gives him the heebie-jeebies. So, he decides to off the old man to get rid of that pesky eye once and for all. Classic Poe, am I right?