First, are you sure you are hallucinating or are you really having vision problems? How long have you had PD? Nuplazid was developed as an anti-psychotic for PD (meaning it does not make PD worse as most anti-psychotics do) and is expensive.

My wife has taken Nuplazid for 3 months and stopped a month ago. When she recently saw her neuro and psychiatrist a month ago, she was obviously hallucinating (seeing people, delusions) and they discontinued Nuplazid but increased her Geodon. My wife's PD and hallucinations seem somewhat worse now. That's why I asked about marijuana in a earlier post.