Ischemic optic neuropathy is an infarction (obstruction) of the blood supply to the optic disc. It often is referred to as a stroke of the optic nerve.
Optic neuritis is inflammation of the optic nerve. It may cause sudden, reduced vision in the affected eye. Sometime inflammation involves optic nerve behind lamina cribrosa ...
Pseudotumor cerebri is a condition in which the pressure inside the skull is increased. The brain is affected in a way that the condition appears to be — but is not — a tumor.