Retro-bulbar optic neuritis is characterized by:

Question

Quizplus · Accepted Answer

Retro-bulbar optic neuritis typically affects the optic nerve behind the eye and does not usually cause visible swelling of the optic disc. It can lead to an afferent pupillary defect (Marcus Gunn pupil), where the direct light reflex in the affected eye is impaired due to the decreased sensory input from the optic nerve, but the consensual light reflex when light is shone in the unaffected eye remains intact. Visual acuity is often reduced, not normal.

Retro-Bulbar Optic Neuritis Is Characterized By