Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Vision Impairment and Blindness ?
    ### Response:
    If you have low vision, eyeglasses, contact lenses, medicine, or surgery may not help. Activities like reading, shopping, cooking, writing, and watching TV may be hard to do. The leading causes of low vision and blindness in the United States are age-related eye diseases: macular degeneration, cataract and glaucoma.
    