Optic neuritis

Optic neuritis (ON) refers to the inflammation that occurs in the orbital optic nerve, intratubular optic nerve, and intracranial optic nerve after penetrating the sclera. Considering that the lesion occurred in the optic nerve in the posterior segment of the eyeball, and there was no change in the fundus, the disease was named retrobulbar neuritis, and according to the severity of the optic nerve inflammation, it was divided into acute posterior optic nerve With chronic bulbar optic neuritis both. In recent years, foreign literature has uniformly called it optic neuritis.