Fig. 1

Flowchart of patient enrollment. A total of 59 patients with idiopathic intracranial hypertension fulfilled the inclusion criteria. Based on the lumbar puncture pressure, 46 patients (78.0%) were classified into the group with lumbar puncture pressure > 25.0 cmCSF. Among these, 62.5% had papilledema. Further, 13 patients (22.0%) were classified into the group with lumbar puncture pressure between 20.0 and 24.9 cmCSF, and 53.8% of this group had papilledema