Fig. 26. Visual defects with papilledema. A. Long-standing papilledema in pseudotumor cerebri. Blind spots may be of sufficient size to mimic bitemporal hemianopia. Field is generally constricted with preferential involvement of inferior nasal areas. B. Extreme loss of peripheral field with long-standing frontal glioma. Note retention of the central field in the left eye (LE). RE, right eye.