An 18 year old male is sent to the emergency room by his ophthalmologist who was working up his progressive visual loss. The loss has been over the past 3 months and his workup included an MRI of the brain. The patient also endorses headaches for the same time period.
The visual loss is described as a blurriness in the left eye only.
Some loss of acuity grossly in the left visual field
Remainder of cranial nerves II-XII are intact
Full strength throughout