Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Pars planitis ?
    ### Response:
    Pars planitis is a disease of the eye that is characterized by inflammation of the narrowed area (pars plana) between the colored part of the eye (iris) and the choroid. This may lead to blurred vision; dark, floating spots in the vision; and progressive vision loss.
    