@misc{indiciae48032f8559fd,
  title = {Letter: Classification of visual performance.},
  author = {A Colenbrander},
  year = {1976},
  doi = {10.1097/00006324-197605000-00010},
  url = {https://pubmed.ncbi.nlm.nih.gov/937506/},
  note = {Source identifier: 937506}
}