@misc{indiciae299167f05470,
  title = {Visual aid device.},
  author = {J M McEntyre},
  year = {1967},
  doi = {10.1016/0002-9394(67)92534-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/6036292/},
  note = {Source identifier: 6036292}
}