When I was a young child, I was told that my optic discs looked raised. I was told that in fact for many years. When I was 39, I was diagnosed with Neurofibromatosis. I had a more thorough eye exam and found to have Optic Nerve drusen. Apparently, the Drusen are "hidden" behind the nerve causing the raised appearance, and as you get older, the drusen are more apparent. I don't know if Neurofibromatosis causes the drusen, but I do have both.
This is probably related to neurofibromatosis.
Dr. O.