The optic tract, which crosses the crus, may also be affected, and hemianopia result.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
But in this hemianopia the region of central vision is always spared.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4" by Various
Transitory hemianopia is rare and is no doubt most frequently of toxic origin.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1" by Various