Introduction

Imaging in patients with idiopathic intracranial hypertension (IIH) is by definition normal but MRI may show dilatation of the subarachnoid space (SAS) around the optic nerve and a secondary flattening of the posterior sclera.1 Because of the existence of a trans-lamina cribrosa (LC) gradient, in patients with IIH the disc surface and thus the LC should be anteriorly displaced secondary to the raised intracranial pressure (ICP).

In patients with glaucoma, an anterior displacement of the LC after lowering intraocular pressure (IOP) using spectral domain optical coherence tomography (SD-OCT) has been recently demonstrated.2–4 However, changes in the LC position after IIH treatment have not been reported previously.