Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Usher Syndrome ?
    ### Response:
    Usher syndrome is an inherited disease that causes serious hearing loss and retinitis pigmentosa, an eye disorder that causes your vision to get worse over time. It is the most common condition that affects both hearing and vision.    There are three types of Usher syndrome:       - People with type I are deaf from birth and have severe balance problems from a young age.
    