@misc{indiciae2ee64006af43,
  title = {The optic disc in glaucoma. I: Classification.},
  author = {R A Hitchings and G L Spaeth},
  year = {1976},
  doi = {10.1136/bjo.60.11.778},
  url = {https://pubmed.ncbi.nlm.nih.gov/1009058/},
  note = {Source identifier: 1009058}
}