Brown-green pigmented ring on the outer edge of the cornea

The brown-green pigmented ring on the outer edge of the cornea is one of the symptoms of hepatolenticular degeneration. Due to the lack of plasma ceruloplasmin in the patient's body, it cannot bind with copper, so a large amount of copper is deposited in the liver, brain (bean-shaped nucleus), cornea, and kidney, resulting in copper metabolism disorders and causing a series of visceral functions and tissue damage; the most common site Basal nucleus, cerebellum, cerebral cortex, cornea, liver, kidney, etc.