Neuritis of an optic nerve

Etiology: the general acute and chronic infections (a flu, an angina, a sapropyra, a lues, a tuberculosis, etc.) and intoxications (methyl alcohol, etc.), a diabetes mellitis, a gout, illnesses of a blood, a nephritis, a focal infection (a tonsillitis, a sinusitis, an otitis, etc.), inflammatory diseases of a brain and its environments, etc.

Pathogenesis: immediate diffusion of inflammatory process on an optic nerve from adnexal sinuses of a nose or environments of a brain, reaction of a nervous tissue to a sensibilization at the general infections and intoxications.

Signs. Dropping of vision, concentric, sometimes non-uniform narrowing of a field of vision, first of all on colors, the central and paracentral scotomas in sight. Hemorrhages on a disk and about it are possible. From a congestive optic disk and a pseudoneuritis differs quickly coming and appreciable falling of visual functions.