Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) fish-eye disease ?
    ### Response:
    Fish-eye disease, also called partial LCAT deficiency, is a disorder that causes the clear front surface of the eyes (the corneas) to gradually become cloudy. The cloudiness, which generally first appears in adolescence or early adulthood, consists of small grayish dots of cholesterol (opacities) distributed across the corneas.
    