Retrobulbar Neuritis

Diagnosis

A doctor will use an ophthalmoscope to examine the back of the eye, particularly the optic disc. This is where the optic nerve fibers concentrate before exiting the eye to extend back toward the brain. In the early stages of retrobulbar neuritis, the optic disk appears normal. Later, it may become pale.

The pupil normally becomes smaller (constricts) in response to light. In retrobulbar neuritis, this response often is reduced in the affected eye. The doctor also will test your visual acuity, which frequently is impaired in the affected eye. The doctor will test your side (peripheral) vision because, in many cases of retrobulbar neuritis, a scotoma, a blind or dark spot in the visual field, may be detected. The doctor also may search for associated conditions, such as infection or multiple sclerosis, after a detailed discussion about other symptoms and a complete physical examination.

Expected Duration

How long this condition lasts depends on the cause, and in some people, optic neuritis continues to return. In some cases, if the optic nerve is permanently damaged, it can lead to blindness.