@misc{indiciae2ff18a43cec5,
  title = {A reversible bifocal lens.},
  author = {D E ROLF},
  year = {1951},
  doi = {10.1001/archopht.1951.01700010478013},
  url = {https://pubmed.ncbi.nlm.nih.gov/14818502/},
  note = {Source identifier: 14818502}
}