@misc{indiciae4a76c9a39441,
  title = {Ring-forming keratitis.},
  author = {S D Gupta and J S Gupta and K Singh},
  year = {1967},
  doi = {10.1016/0002-9394(67)90256-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/6019541/},
  note = {Source identifier: 6019541}
}