<prompt> Kayser-Fleischer ring will be present in what propoion of patients with neurologic manifestations of wilson disease?Almost 100Less than 1030-5020-30  <response>: Kayser-Fleischer rings diagnosed definitively by an ophthalmologist using a slit lamp. They are present in 99 of patients with neurologicpsychiatric forms of wilson. Kayser-Fleischer rings are present in only 30-50 of patients diagnosed in the hepatic or presymptomatic state of wilson disease. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 3188 