@misc{indiciae6684580a7f7e,
  title = {Visual aids for the partially sighted.},
  author = {E GUNSTENSEN},
  year = {1960},
  doi = {10.1136/bjo.44.11.672},
  url = {https://pubmed.ncbi.nlm.nih.gov/13709792/},
  note = {Source identifier: 13709792}
}