Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Senior-Lken syndrome ?
    ### Response:
    Senior-Lken syndrome is a rare disorder characterized by the combination of two specific features: a kidney condition called nephronophthisis and an eye condition known as Leber congenital amaurosis.  Nephronophthisis causes fluid-filled cysts to develop in the kidneys beginning in childhood.
    