November 1985
Volume 26, Issue 11
Free
Articles  |   November 1985
Interaction of ultraviolet laser light with the cornea.
Investigative Ophthalmology & Visual Science November 1985, Vol.26, 1455-1464. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      R R Krueger, S L Trokel, H D Schubert; Interaction of ultraviolet laser light with the cornea.. Invest. Ophthalmol. Vis. Sci. 1985;26(11):1455-1464.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

The effect of pulsed ultraviolet (UV) laser light on the cornea depends on wavelength (photon energy), irradiance (photon flux), and pulse firing rate. At the available excimer laser wavelengths of 193, 249, 308, and 351 nanometers, the authors have varied the irradiance per pulse (10 to 2000 mj/cm2) as well a pulse frequency (1, 10, 25 Hz) and determined the thresholds for coagulation and ablation of the corneal stroma. The latter ablative action creates a groove resembling an incision and was present at all wavelengths studied. The threshold for ablation increased for longer wavelengths and lower pulse frequencies, except for 193-nm exposure, which was characterized by a constant threshold independent of laser pulse rate. The grooves at 193 nm were both biomicroscopically and histologically smooth and no coagulation effects were noted. Some degree of coagulation of adjacent tissues was noted at 249, 308, and 351 nm.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×