Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Retinopathy pigmentary mental retardation ?
    ### Response:
    What are the signs and symptoms of Retinopathy pigmentary mental retardation? The Human Phenotype Ontology provides the following list of signs and symptoms for Retinopathy pigmentary mental retardation. If the information is available, the table below includes how often the symptom is seen in people with this condition.
    