Anti-GQ1b antibody syndrome presenting with visual deterioration as the initial symptom

Anti-GQ1b antibody syndrome refers to a distinct variant of Guillain- Barré syndrome. Involvement of the optic nerve in anti-GQ1b antibody syndrome is extremely rare.Here, we report a case of anti-GQ1b antibody syndrome presenting with visual deterioration as the initial symptom. A 73-year-old man presented with a 5-day history of bilateral blurred vision and ptosis. He had a previous history of diarrhea starting 10 days before admission....