Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Septo-Optic Dysplasia ?
    ### Response:
    Septo-optic dysplasia (SOD) is a rare disorder characterized by abnormal development of the optic disk, pituitary deficiencies, and often agenesis (absence) of the septum pellucidum (the part of the brain that separates the anterior horns or the lateral ventricles of the brain).
    