@misc{indiciaea1c229486265,
  title = {A modified Zeiss operating slitlamp microscope.},
  author = {S D McPherson},
  year = {1968},
  doi = {10.1016/0002-9394(68)92820-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/5686930/},
  note = {Source identifier: 5686930}
}