Figure 2. Longitudinal Visual Data From Estimated LMP for Patients With IIH Categorized by Whether Pregnant at the Time of IIH Diagnosis or Established IIH Who Become Pregnant and LOESS Smoothers Added to Show Trends Across the Categories.

(A) Perimetric mean deviation measured by Humphrey visual field 24-2 testing (dB). (B) Retinal nerve fiber layer thickness measured on OCT (µm). (C) Total retinal thickness of the optic nerve head measured on OCT (µm). (D) Macular ganglion cell layer volume measured on OCT (mm³). IIH = idiopathic intracranial hypertension; LMP = last menstrual period; OCT = optical coherence tomography.