From what I've read, cats regard eye contact as aggressive, whereas not looking directly at them, or squinting, is considered friendly, which is why they always go to the person in the room who doesn't like cats - because a cat's body language is different to ours and dogs.
So a wide eyed NO! and clap would be more effective than an eyes turned away one, as the cat would think you don't really mean it.
Sorry to contradict you MM