Dr. Brian Mathiebr Roholt Vision Institutebr (877) 689-5205br 5890 Mayfair Rd.br N. Canton, OH 44720br More than two and a half million people in the United States suffer from glaucoma, but almost half of them don’t know it.There are no symptoms that go along with glaucoma. That’s why it’s important to be checked regularly. To schedule a free consultation, call Roholt [ROE-holt] Vision Institute today.