NeurologyLive® Brain Games: March 20, 2022


Test your neurology knowledge with NeurologyLive®'s weekly quiz series, featuring questions on a variety of clinical and historical neurology topics. This week's topic is optic neuritis and neuromyelitis optica spectrum disorder (NMOSD).

Welcome to NeurologyLive® Brain Games! This weekly quiz series, which goes live every Sunday morning, will feature questions on a variety of clinical and historical neurology topics, written by physicians, clinicians, and experts in the fields of neurological care and advocacy.

Test your mettle each week with 3 questions that cover a variety of aspects in the field of neurology, with a focus on dementia and Alzheimer disease, epilepsy and seizure disorders, headache and migraine, movement disorders, multiple sclerosis, neuromuscular disorders, sleep disorders, and stroke and cerebrovascular disease.

This week's questions are brought to you by Melanie Truong-Le, DO, OD, and will include the theme of optic neuritis and neuromyelitis optica spectrum disorder (NMOSD).

Click here to check out the prior iterations of Brain Games.

Interested in submitting quiz questions? Contact our managing editor, Matt Hoffman, via email:

The optic nerve is considered an extension of the central nervous system and essential for the sensory function of vision. It contains the axons of ganglion cells from the retina. Approximately how many axons are bundled in the optic nerve of each eye?

Localize the lesion: What structure is possibly involved in a patient with dyschromatopsia (color vision deficiency)?

A 32-year-old woman presents to the ER because of loss of vision and pain behind the eyes when she looks to the right. Her visual acuity was found to be 20/40 in the right eye and 20/20 in the left eye. She cannot see color vision well. What do you expect to find in a pupillary exam in this patient if you were to see the patient in the ER that would help make the diagnosis of optic neuritis before any neuroimaging is initiated?

How did you do on this week's quiz? Let us know with a response to the poll below. Don't forget to share and compare your results with your friends!

How many questions did you get correct?


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