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  1. An Adie’s pupil is when the parasympathetic nerves to the eye become damaged. Remember:

    sympathetic = fight or flight reflex
    (pupil dilates so you can see in the dark and run away)

    parasympathetic = rest and digest
    (pupil constricts to help you see close-up food)

    With Adies, the “parasympathetic constriction” response is lost. This creates a dilated pupil. My patients may also complain of some difficulty reading up close because of loss of accommodation.

    Adies is generally benign and may get better with time. In fact, the pupil may actually end up SMALLER than it used to be (we call this an “old Adies”).

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