@misc{indiciae9d631dec4540,
  title = {Refraction in ophthalmology.},
  author = {R Hertzberg},
  year = {1989},
  doi = {10.1111/j.1442-9071.1989.tb00523.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2803767/},
  note = {Source identifier: 2803767}
}