Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Stickler syndrome type 1 ?
    ### Response:
    Stickler syndrome is a group of hereditary connective tissue disorders characterized by distinctive facial features, eye abnormalities, hearing loss, and joint problems. The features vary widely among affected people. Stickler syndrome type 1 may be divided into 2 subgroups: the membranous vitreous type and a predominantly ocular type.
    