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Today, lasers can be found in a multitude of applications ranging from laser pointers for classroom instruction to medical instruments for eye and cosmetic surgery. Lasers are also used for research, materials processing, defense, and flight safety.
Because of the high power densities that lasers achieve, they pose a serious risk to eyes and skin. Depending on variables such as wavelength, continuous-wave or pulsed operation, and direct or diffused exposure, lasers can cause permanent ocular injury or can vaporize skin tissue. The focusing properties of the human eye can significantly increase the impact of irradiance entering the retina, which makes eye safety a critically important practice for laser users. Lasers are categorized…READ MORE