@misc{indiciaecd53b4223bac,
  title = {Subclinical optic neuropathy in multiple sclerosis.},
  author = {R J Galvin and J R Heron and D Regan},
  year = {1977},
  doi = {10.1001/archneur.1977.00500230036005},
  url = {https://pubmed.ncbi.nlm.nih.gov/911226/},
  note = {Source identifier: 911226}
}