Traditional Culture Encyclopedia - Traditional stories - What is the difference between excimer laser myopia surgery and femtosecond laser?
What is the difference between excimer laser myopia surgery and femtosecond laser?
1, different uses: Femtosecond laser has been widely used in physics, biology, chemical reaction control, optical communication and other fields. Excimer laser is widely used in clinical medicine, scientific research and industrial application.
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2. Different characteristics: Femtosecond laser is the shortest pulse we can get under experimental conditions at present, with an accuracy of 5 microns. It has very high instantaneous power, which can reach tens of billions of watts, hundreds of times more than the total power generated in the world. Excimer laser is an ultraviolet beam that is invisible to human eyes after being excited by a mixture of fluorine and hydrogen. It is a kind of cold laser, which can accurately ablate the desired part of human cornea without damaging surrounding tissues and other tissues and organs, and its effect is permanent.
3. Time is different: Femtosecond laser (the first ruby laser) came out in 1960. Excimer laser was invented in Moscow Institute of Physics 1970.
References:
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