@misc{indiciae45fad6df992c,
  title = {Relationship between visual acuity and observation distance.},
  author = {G Heron and H P Furby and R J Walker and C S Lane and O J Judge},
  year = {1995},
  url = {https://pubmed.ncbi.nlm.nih.gov/7724215/},
  note = {Source identifier: 7724215}
}