Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Norum disease ?
    ### Response:
    Norum disease is an autosomal recessive disorder of lipoprotein metabolism that causes a typical triad of diffuse corneal opacities, target cell hemolytic anemia, and proteinuria with renal (kidney) failure. Two clinical forms are recognized: familial LCAT deficiency and fish-eye disease.
    