• Courtesy of Michael S. Lee, MD.
    File Size: 83 KB

    Assessing for relative afferent pupillary defect (RAPD) in a patient with left traumatic optic neuropathy; the left pupil is pharmacologically dilated. A, The right pupil constricts in response to light directed at the right eye only. B, The right pupil dilates in response to light directed at the left eye only, indicating a left RAPD.