Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) isolated ectopia lentis ?
    ### Response:
    Isolated ectopia lentis is a condition that affects the eyes, specifically the positioning of the lens. The lens is a clear structure at the front of the eye that helps focus light. In people with isolated ectopia lentis, the lens in one or both eyes is not centrally positioned as it should be but is off-center (displaced).
    