Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Wagner syndrome ?
    ### Response:
    Wagner syndrome is a hereditary disorder that causes progressive vision loss. The eye problems that lead to vision loss typically begin in childhood, although the vision impairment might not be immediately apparent.  In people with Wagner syndrome, the light-sensitive tissue that lines the back of the eye (the retina) becomes thin and may separate from the back of the eye (retinal detachment).
    