• Cross sections of the orbital portion of the optic nerve, the decussating fibers of which underwent atrophy, have a distinctive histologic pattern. Distally, from the eyeball to the midportion of the optic nerve, this pattern of atrophy consists of a broad-based nasal and a narrow-based temporal sector that form a horizontal band. Proximally, near the optic canal, the pattern changes. The atrophic bundles occupy the nasal and central portions of the optic nerve only.
Renate Unsöld, William F. Hoyt. Band Atrophy of the Optic NerveThe Histology of Temporal Hemianopsia. Arch Ophthalmol. 1980;98(9):1637–1638. doi:10.1001/archopht.1980.01020040489020