@misc{indiciaedc9d1427f4be,
  title = {Contrast sensitivity in humans with abnormal visual experience.},
  author = {R D Freeman and L N Thibos},
  year = {1975},
  doi = {10.1113/jphysiol.1975.sp010952},
  url = {https://pubmed.ncbi.nlm.nih.gov/1142303/},
  note = {Source identifier: 1142303}
}