@misc{indiciaeeb6839f51939,
  title = {Ophthalmic instruments.},
  author = {C E Krakau},
  year = {1990},
  doi = {10.1097/00055735-199002000-00017},
  url = {https://pubmed.ncbi.nlm.nih.gov/10149670/},
  note = {Source identifier: 10149670}
}