Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) hyperferritinemia-cataract syndrome ?
    ### Response:
    Hyperferritinemia-cataract syndrome is a disorder characterized by an excess of an iron storage protein called ferritin in the blood (hyperferritinemia) and tissues of the body. A buildup of this protein begins early in life, leading to clouding of the lenses of the eyes (cataracts).
    