Photokeratitis from 193 nm argon-fluoride laser radiation.

D. H. Sliney, R. R. Krueger, S. L. Trokel, K. D. Rappaport

Research output: Contribution to journalArticlepeer-review


The threshold for photokeratitis at 193 nm was obtained for the rabbit cornea using an ArF excimer laser. Because ablation occurs at a level below that for photokeratitis, it was necessary to expose the cornea to a lengthy series of low-energy exposures. It is concluded that the 193 nm photons have such a shallow penetration depth, being limited to the outermost epithelial cells, that classical photokeratitis occurs from the fluorescence emitted at the corneal epithelial absorption site. An intact tear film may help to protect the cornea from low-level, scattered 193 nm laser radiation.

Original languageEnglish (US)
Pages (from-to)739-744
Number of pages6
JournalPhotochemistry and Photobiology
Issue number6
StatePublished - Jun 1991
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Biophysics


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