Review Question - QID 214376

A 36-year-old woman presents to the emergency department with severe left eye pain with associated vision loss. She denies any physical or chemical trauma to the eye, recent use of eye drops, or foreign body sensation within the affected eye. Approximately 2 weeks ago, she had an upper respiratory tract infection that was symptomatically managed with ibuprofen. She reports that 8 months ago, she experienced bilateral lower extremity weakness and urinary retention and was admitted to the hospital where she was appropriately treated. She did not follow-up for outpatient treatment. She has no past medical history and is only taking a daily multivitamin. On physical examination, she has consensual pupillary response when light is shined on the right eye. When light is swung from the right eye to the left eye, there is a relative dilation of both pupils. Her visual acuity in the right eye is 20/40 and in the left eye is 20/200. Her extraocular movements are intact; however, pain is produced with eye movement most notably involving the left eye. Which of the following is the most appropriate treatment option for this patient's symptoms?