@misc{indiciae5be5b498a39c,
  title = {The mean value of refractive errors.},
  author = {A S Yager},
  year = {1982},
  doi = {10.1016/0275-5408(82)90050-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/7088559/},
  note = {Source identifier: 7088559}
}