Optic neuritis is a common symptom of multiple sclerosis (MS) that affects your eyes and vision. Learn more about the symptoms, causes, diagnosis, treatment, and complications of optic neuritis.

Optic neuritis (ON) ... Pupillary Light Reaction Test By moving a flashlight in front of your eyes, a doctor can see how your pupils respond in the presence of bright light.

Optic neuritis can be an early sign of multiple sclerosis. ... which examines your optic disk for swelling; pupillary light reaction test, which tests how your pupils respond to light; ...

Examination of patients with acute demyelinating optic neuritis reveals evidence of optic neuropathy (e.g., impaired visual acuity and color vision, visual-field loss, and afferent pupillary ...

Optic neuritis is characterized by inflammation of the optic nerve, and is frequently but not always associated with multiple sclerosis (MS). 1 Once a patient is diagnosed with MS, visual symptoms ...

Marcus Gunn pupil is a condition in which vision problems affect one eye. In tests, the affected pupil will dilate more than the unaffected pupil. Underlying reasons including optic neuritis and ...

Just behind the iris and pupil lies the lens, which helps focus light on the back of your eye. ... Optic neuritis: The optic nerve becomes inflamed, usually due to an overactive immune system.

Optic neuritis: This condition ... In compressive forms of optic neuropathy, various intracranial tumors should be ruled out. A relative afferent pupillary defect is characteristic, ...

the pupil reacting unusually to bright light; 5. ... However, pressure behind the eyes may be a symptom of a more serious condition, such as optic neuritis or Graves’ disease.

Optic neuritis needs prompt treatment, particularly when related to NMOSD and MOG, Lee said. A delay of even 4 days reduces the chance of regaining 20/20 vision by a factor of eight.

Optic Disc Swelling. In contrast to true papilledema, with AION or optic neuritis, there is a startling loss of visual acuity, but clear-cut field defects.