If you want to find out more about Dianetics and Scientology, the best way to do this is to read an L. Ron Hubbard book on the subject. I personally recommend you read Dianetics: The Modern Science of Mental Health.
First, I used to need glasses for reading - I would get headaches without them. While reading Dianetics, I realized I didn’t used the glasses and haven’t use them since and that was 30 years ago! Second, Dianetics explains more about what is going on in the world than any other book I’ve come across - that’s amazing!