@misc{indiciaec8f2013eacca,
  title = {The modulation transfer function as a performance specification for ophthalmic lens and protective devices.},
  author = {B Ward and J K Davis},
  year = {1972},
  doi = {10.1097/00006324-197203000-00006},
  url = {https://pubmed.ncbi.nlm.nih.gov/4502357/},
  note = {Source identifier: 4502357}
}