title: Do environmental factors influence excimer laser pulse fluence and efficacy?
abstract: OBJECTIVE
  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.
authors: Department of Ophthalmology, Santa Casa of São Paulo, Brazil. pauloecdantas@uol.com.br
authors: Paulo Elias Correa
authors: PE
authors: Dantas
authors: Cristiane Loiola
authors: CL
authors: Martins
authors: Luciene Barbosa
authors: LB
authors: de Souza
authors: M Cristina Nishiwaki
authors: MC
authors: Dantas
mesh_terms: D004780:Environment, Controlled; D006801:Humans; D006813:Humidity; D020731:Keratomileusis, Laser In Situ; D008953:Models, Anatomic; D009216:Myopia / Q000601:surgery; D019904:Polymethyl Methacrylate; D013696:Temperature
chemical_list: D019904:Polymethyl Methacrylate