One can consider IIH as a model for these forms of glaucoma; CSFp is elevated in IIH, as measured by lumbar puncture (LP). Visual field loss in this disease follows an arcuate pattern, similar to glaucomatous loss. This would seem to suggest that glaucomatous optic neuropathy and IIH optic neuropathy share similar mechanisms (i.e., increased TPG due to either elevated IOP or CSFp).