@misc{indiciae977ae305d6d9,
  title = {Accommodation and vergence require effort-to-see.},
  author = {Ellie L Francis and Bai-chuan Jiang and D Alfred Owens and Richard A Tyrrell},
  year = {2003},
  doi = {10.1097/00006324-200306000-00014},
  url = {https://pubmed.ncbi.nlm.nih.gov/12808408/},
  note = {Source identifier: 12808408}
}