@misc{indiciaeb44ec93164f9,
  title = {Astigmatism--its components and their changes with age.},
  author = {J Anstice},
  year = {1971},
  doi = {10.1097/00006324-197112000-00002},
  url = {https://pubmed.ncbi.nlm.nih.gov/5289474/},
  note = {Source identifier: 5289474}
}