Neuro-ophthalmologist Grant Liu, MD, offers an insightful Grand Rounds presentation on the intricacies of Pseudotumor Cerebri Syndrome in the context of the revised diagnostic criteria. An author of the revision, Dr. Liu reviews neuroimaging abnormalities, clarification of normal opening pressure and features distinguishing the syndrome of intracranial hypertension without papilledema from intracranial hypertension with papilledema in children with the Syndrome.