Fig. 1. Pituitary adenoma first presenting during pregnancy as a left anterior chiasmal syndrome. A. Goldmann visual fields in the sixth month of pregnancy showing bitemporal superior defects, the left (top) worse than the right (bottom). Visual acuity at this time was 20/30 OD and hand motions OS. B. Goldmann visual fields around the time of delivery show progression of the bitemporal superior defects. For each visit, the upper field is the left eye, and the lower field is the right eye. C. Goldmann visual fields performed 4 months after delivery show resolution of much of the visual field change. Visual acuity at this time was 20/15 in each eye. The patient remained stable thereafter, and had a subsequent uncomplicated pregnancy 6 years later. (Courtesy of Neil Miller, MD)