Wilson's Disease is a rare genetic disorder caused by the inability of the body to properly dispose of copper from the bloodstream. In normal people, the liver filters excess copper from the body and disposes of it in bile into the digestive tract. However, in patients with Wilson's, excess copper accumulates in the body's organs, particularly the liver, eventually poisoning them. One of the only definitive signs of the disease is a Kayser-Fleisher ring, a copper colored ring around the cornea in the eye. As such, many cases of Wilson's are discovered during routine eye exams.