Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cone dystrophy ?
    ### Response:
    Cone dystrophy is a general term for a group of rare eye disorders that affect the cone cells of the retina. Cone cells allow a person to see color and fine detail, and they work best in bright light. The cone dystrophies can cause a variety of symptoms such as decreased visual clarity when looking straight ahead, a reduced ability to see colors, and an increased sensitivity to light.
    