@misc{indiciaec2f350b8fe17,
  title = {The variation in the accommodative-convergence accommodation (ACA) ratio upon periodic retesting.},
  author = {L MANAS and P SHULMAN},
  year = {1954},
  doi = {10.1097/00006324-195408000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/13188950/},
  note = {Source identifier: 13188950}
}