Laser Hazards and Ocular Exposure Analysis and Protection | ||
| The International Conference on Electrical Engineering | ||
| Article 123, Volume 6, 6th International Conference on Electrical Engineering ICEENG 2008, May 2008, Pages 1-17 PDF (313.56 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iceeng.2008.34398 | ||
| Author | ||
| Samy Ghoniemy | ||
| Egyptian Armed Forces. | ||
| Abstract | ||
| Abstract: In this paper, different lasers such as ruby, Argon, Nd:Y AG, He Ne, and CO2 are used to expose the eyes of rabbits as a simulation of the human eyes accidental laser exposure. Quantitative irradiance causing threshold damage (lesion) in as a function of wavelength under different pulse durations is studied. The retinal damage studies have shown that the threshold retinal damage decreases as increasing the exposure time. Our results also showed that the retinal sensitivity to threshold damage decreases as increasing the wavelength under different pulse duration. The basis of the physical and analytical models used to predict and analyze the laser hazards and their effect on the eye are presented. The proposed physical and analytical models include the representation of the laser and the eye characteristics are used for predicting the radiometric aspects and calculating the overall laser intensity exposing the eye. Other parameters that impact the evaluation such as atmospheric attenuation, laser wavelength, and divergence angle are considered in the proposed model. The proposed algorithm is used to predict many parameters such as hazardous distance, total incident power on the eye and the reflectance of the proposed protection filter. The simulation results of the proposed algorithm are in good agreement with the measurement results. | ||
| Keywords | ||
| Laser effects; Laser reflection hazards; retinal laser damage; laser safety | ||
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