@misc{indiciae1dd0b93a4c40,
  title = {Luminous frame for retinoscopy.},
  author = {E NELKEN},
  year = {1959},
  doi = {10.1136/bjo.43.7.444},
  url = {https://pubmed.ncbi.nlm.nih.gov/14426431/},
  note = {Source identifier: 14426431}
}