Fig. 3.

A brain magnetic resonance imaging of a 72-year-old man revealed a pituitary adenoma (A) displacing the pituitary stalk (arrow) and parenchyma to right side, and compression of the optic chiasm (arrowheads) on a T1-weighted gadolinium-enhanced image of the coronal section. (B) His left optic nerve looked more compressed than the right (arrows) on a T2-weighted coronal image (C). Analysis of his visual field revealed bitemporal hemianopsia (D) and a Ganglion cell thickness map showed a binasal vertical pattern of loss in the right eye, whereas the left eye showed a more generalized pattern of retinal ganglion cell loss, which was more severe at the nasal half and had a relatively preserved inferotemporal sector (E). OD = right eye; OS = left eye; GCL = ganglion cell layer; IPL = inner plexiform layer.