@misc{indiciae2e90fbf031d3,
  title = {Astigmatic difference in refractive errors.},
  author = {E J Naylor},
  year = {1968},
  doi = {10.1136/bjo.52.5.422},
  url = {https://pubmed.ncbi.nlm.nih.gov/5658399/},
  note = {Source identifier: 5658399}
}