@misc{indiciaeac2745961f2d,
  title = {Pseudoaccommodation and progressive addition lenses.},
  author = {W E Preston and N Roth},
  doi = {10.1016/0039-6257(79)90130-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/515945/},
  note = {Source identifier: 515945}
}