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Do environmental factors influence excimer laser pulse fluence and efficacy?
Paulo Elias Correa Dantas1, Cristiane Loiola Martins, Luciene Barbosa de Souza
1Department of Ophthalmology, Santa Casa of São Paulo, Brazil. pauloecdantas@uol.com.br
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|March 28, 2007
Summary
Environmental factors like temperature and humidity do not significantly impact excimer laser fluence or myopic correction accuracy. This finding supports consistent laser performance in controlled ophthalmic surgical settings.
Area of Science:
- Ophthalmology
- Laser Physics
Background:
- Excimer lasers are crucial for refractive surgery.
- Environmental factors can potentially affect laser performance.
Purpose of the Study:
- To assess the impact of temperature and humidity variations on excimer laser fluence.
- To evaluate the effect on the reproducibility of myopic correction.
Main Methods:
- Analyzed excimer laser fluence using a power meter.
- Tested reproducibility of -3.00 diopter myopic correction on a polymethylmethacrylate plate.
- Simulated varying room temperature and relative air humidity gradients.
Main Results:
- No significant differences were observed in laser energy fluence across different environmental conditions.
- Reproducibility of myopic correction remained consistent regardless of simulated environmental changes.
Conclusions:
- Subtle variations in temperature and humidity do not appear to influence excimer laser fluence.
- Laser efficacy and refractive correction accuracy are maintained in controlled environments.