Abstract • Follow-up data are presented on a previously described child in whom myelinated nerve fibers presumably developed 5½ months after an optic nerve decompression. During the subsequent five years, the myelinated nerve fibers have progressively enlarged. Five years after surgery, myelinated nerve fibers appeared in the patient's fellow eye. An additional two cases of documented acquired myelinated nerve fibers without any predisposing factors are reported. Myelinated nerve fibers can appear and progress after infancy. References 1. Sattler CH: Über die markscheidenentwicklung im tractus opticus, chiasma und nervus opticus . Graefes Arch Ophthalmol 1915;90:271-298.Crossref 2. Duke-Elder S (ed): Congenital deformities , in System of Ophthalmology . St Louis, CV Mosby Co, 1963, vol 3, pp 646-650. 3. Walsh FB, Hoyt WF: Congenital abnormalities of the eyes and central nervous system , in Clinical Neuro-ophthalmology . Baltimore, Williams & Wilkins Co, 1969, vol 1, pp 665-667. 4. Schaffer DB: Myelinated nerve fibers , in Duane TD, Jaeger EA (eds): Clinical Ophthalmology . Hagerstown, Md, Harper & Row Publishers Inc, 1983, vol 3, pp 5-6. 5. Ozanils V, Jakobiec FA: Prenatal development of the eye and its adnexa , in Duane TD, Jaeger EA (eds): Biomedical Foundations of Ophthalmology . Hagerstown, Md, Harper & Row Publishers Inc, 1983, vol 1, p 84. 6. Schachat MD, Miller NR: Atrophy of myelinated retinal nerve fibers after acute optic neuropathy . Am J Ophthalmol 1981;92:854-856. 7. Straatsma MD, Foos RY, Heckenlively JR, et al: Myelinated retinal nerve fibers . Am J Ophthalmol 1983;91:25-38. 8. Kushner BJ: Optic nerve decompression . Arch Ophthalmol 1979;97:1459-1461.Crossref 9. Blackwood W: Normal structure and general pathology of the nerve cell and neuroglia , in Blackwood W, Corjellis JAN (eds): Greenfield's Neuropathology . Chicago, Year Book Medical Publishers Inc, 1976, pp 21-37. 10. Bembridge BA: The problem of myelination in the central nervous system, with special reference to the optic nerve . Trans Ophthalmol Soc UK 1956, 76:311-322. 11. Friede RL, Hu KH: Proximo-distal differences in myelin development in human optic fibers . Z Zellforsch 1967;79:259-264.Crossref 12. Rubin LF: The rabbit fundus , in Atlas of Veterinary Ophthalmoscopy . Philadelphia, Lea & Febiger, 1974, pp 388-389. 13. Vaughn JE: An electron microscopic analysis of gliogenesis in rat optic nerves . Z Zellforsch 1969;94:293-324.Crossref 14. Hirano A, Zimmerman HM, Levine S: Myelin in the central nervous system as observed in experimentally induced edema in the rat . J Cell Biol 1966;31:397-411.Crossref 15. Blunt MJ, Baldwin F, Wendell-Smith CP: Gliogenesis and myelination in kitten optic nerve . Z Zellforsch 1972;124:293-310.Crossref 16. Bunge MB, Bunge RP, Pappas GD: Electron microscopic demonstration of connections between glia and myelin sheaths in the develoing mammalian central nervous system . J Cell Biol 1962;12:448-453. 17. Peters A: Observations on the connections between myelin sheaths and glial cells in the optic nerves of young rats . J Anat 1964;98:125-134. 18. Wendell-Smith CP, Blunt MJ, Baldwin F: The ultrastructural characterization of macroglial cell types . J Comp Neurol 1966;127:219-240.Crossref 19. Bunge RP: Glial cells and the central myelin sheath . Physiol Rev 1968;48:197-251. 20. Bellhorn RW, Hirano A, Henkind P: Schwann cell proliferations mimicking medullated retinal nerve fibers . Am J Ophthalmol 1979; 87:469-473. 21. Baarsma GS: Acquired medullated nerve fibers . Br J Ophthalmol 1980;64:651.Crossref 22. Bunge M, Bunge RP, Ris H: Ultrastructural study of remyelination in an experimental lesion in adult cat spinal cord . J Biophys Biochem Cytol 1961;10:67-94.Crossref 23. Urich H: Malformations of the nervous system, perinatal damage and related conditions in early life , in Blackwood W, Corsellis JAN (eds): Greenfield's Neuropathology . Chicago, Year Book Medical Publishers Inc, 1976, pp 431-433. 24. Cogan DG, Kuwabara T: Myelin artifacts . Am J Ophthalmol 1967;64:622-626. 25. Gradle HS: Blind spot: III. The relation of the blind spot to medullated fibers in the retina . JAMA 1921;77:1483.Crossref
Archives of Ophthalmology – American Medical Association
Published: Apr 1, 1985
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