Hello, I have green light-emitting parasites in my brain, that enter and leave my eyes that's how I know about them, and I've talked to my psychiatrist and a doctor at the walk-in clinic they don't believe me they say its floaters, I have had them for 3 years now and I think about them and I cry when they enter my eyes because I don't know how to get the doctor to help with this problem. What should I do?