A 45-year-old white woman was referred by the Tufts Medical Center neurology service to the Tufts-New England Eye Center neuro-ophthalmology service for 3 weeks of blurred vision in the left eye and retro-orbital headache.
Her medical history included hypertension, obesity, rosacea and anemia. Her medications included hydrochlorothiazide and topical metronidazole.
Best corrected visual acuities were 20/20 in the right eye and 20/40 in the left eye. Confrontation visual fields were full, and automated perimetry (HVF 30-2 SITA Fast) showed enlarged blind spots bilaterally (Figure 1). Color vision
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