A deficiency of which vitamin can cause degeneration of optic nerve fibers?
Vitamin B12. Vitamin B12 deficiency optic neuropathy is a rare complication of this deficiency that results in progressive, bilateral, painless vision loss that is often associated with reduced color vision and central or cecocentral scotomas.
Ata F, Bint I Bilal A, Javed S, et al. Optic neuropathy as a presenting feature of vitamin B-12 deficiency: A systematic review of literature and a case report. Ann Med Surg (Lond). 2020;60:316-322. Published 2020 Nov 5. doi:10.1016/j.amsu.2020.11.010