Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Retinal vasculopathy with cerebral leukodystrophy ?
    ### Response:
    Retinal vasculopathy with cerebral leukodystrophy (RVCL) is a rare, genetic condition that primarily affects the central nervous system. Symptoms begin in adulthood (usually in the 40s) and may include loss of vision, mini-strokes, and dementia. Death can sometimes occur within 10 years of the first symptoms appearing.
    