RT was an 82-year-old man who noted blurred vision in both eyes for several weeks. He was seen by an optometrist who documented vision of 20/80 OD and 20/100 OS. Slit-lamp examination was unremarkable except for mild nuclear sclerotic cataracts. Fundus examination showed bilateral optic disc edema (Fig. 295). The patient was referred for neurological workup and an MRI scan was obtained. It showed no abnormalities in the brain, but some enhancement of both optic nerves with gadolinium injection (Fig. 296).
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