Vertigo, how the open credits reflect the rest of the film

The title sequence reflects the rest of the film with the use of spirals in the close up of the eye, this suggests confusion and dizziness which is a symptom of Vertigo. The use of close ups and extreme close ups on the eye in the title sequence makes the audience feel as if they are actually entering the woman's mind, this reflects the events that follow in the film as the main character gets possessed ( a spirit enters her mind).