Do environmental factors influence excimer laser pulse fluence and efficacy?

J Refract Surg. 2007 Mar;23(3):307-9. doi: 10.3928/1081-597X-20070301-16.


Purpose: To evaluate excimer laser fluence after experimentally induced changes in room temperature and relative air humidity.

Methods: Excimer laser fluence was analyzed with a specific power meter under three different gradients of room temperature and relative air humidity as well as the reproducibility of myopic correction of -3.00 diopters in a polymethylmethacrylate plate test.

Results: Under the simulated environmental conditions, no significant difference in laser energy fluence and reproduction of myopic correction was observed.

Conclusions: In a setting with controlled temperature and relative air humidity, subtle changes in environmental factors do not appear to influence laser fluence and efficacy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Environment, Controlled*
  • Humans
  • Humidity*
  • Keratomileusis, Laser In Situ*
  • Models, Anatomic*
  • Myopia / surgery
  • Polymethyl Methacrylate
  • Temperature*


  • Polymethyl Methacrylate