The fact that the case herein reported is the only one on record in the New Orleans Eye, Ear, Nose and Throat Hospital speaks for its rarity. In Wills Eye Hospital 1 case of glioma was found in 12 years out of 230,742 admissions. In the Massachusetts Eye and Ear Infirmary in 36 years there were 4 cases in 669,857 admissions. There are on record only 300 cases, and, according to Duke-Elder, only 8 are cases of glioma of the disc.
Normal Anatomy of the Optic Nerve
It will be recalled that the optic nerve is not comparable to other peripheral nerves, but resembles more the nerve pathways of the brain. It differs, however, from the latter by being divided into bundles by extensions of the pial sheath. The fibers themselves are separated by glial tissue which is similar in structure to the glia of the brain and contains
BOLES WM, NAUGLE TC, SAMSON CLM. Glioma of the Optic NerveReport of a Case Arising from the Optic Disc. AMA Arch Ophthalmol. 1958;59(2):229-231. doi:10.1001/archopht.1958.00940030097008