Quantification of Peripapillary Venous Tortuosity in Idiopathic Intracranial Hypertension Using Optos Fundus Imaging

Tortuosity of the retinal veins, due to pressure that is transmitted from the peri-optic neural sheath to the base of the globe, is an important clinical finding in patients with IIH (1). Given this, we used a validated algorithm to quantify peripapillary retinal venous tortuosity in patients with IIH to assess whether tortuosity correlates with improvement in clinical disease (2). The authors also postulate that peripapillary venous tortuosity may be a more sensitive measure of changing ICP than Frisen grade or optical coherence tomography.