Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Multifocal choroiditis ?
    ### Response:
    Multifocal choroiditis (MFC) is an inflammatory disorder characterized by swelling of the eye (called uveitis) and multiple lesions in the choroid, a layer of blood vessels between the white of the eye and the retina. Symptoms include blurry vision, floaters, sensitivity to light, blind spots and mild eye discomfort.
    