@misc{indiciae79f7d3b28912,
  title = {A new optotype chart.},
  author = {G H Jonkers},
  year = {1975},
  doi = {10.1159/000307553},
  url = {https://pubmed.ncbi.nlm.nih.gov/1165918/},
  note = {Source identifier: 1165918}
}