An Atypical Case of Optic Neuropathy

A 17-year-old girl presented with 3 months of decreased vision in the right eye associated with throbbing pain with eye movement. Magnetic resonance imaging revealed a fusiform expansion of the right optic nerve and enhancement of the orbital, canalicular, and prechiasmatic segments of the right optic nerve. What would you do next?

Automated summary

A 17-year-old girl presented with 3 months of decreased vision and throbbing eye pain in the right eye. MRI revealed fusiform expansion of the right optic nerve and enhancement of orbital, canalicular, and prechiasmatic segments of the right optic nerve.