Saturday, April 3, 2010

Femtosecond Laser

What is a Femtosecond Laser?

A femtosecond laser is a laser which emits light pulses with a duration measured by a unit called a "femtosecond ". One femtosecond is equal to one millionth of one billionth of a second, or one millionth of a nanosecond.
The femtosecond laser emits ultra-short infrared light to a precise depth within the interior of the cornea . creating microscopic bubbles of carbon dioxide and water at their point of impact. This means photodisruption "the process name" only occurs in the focal point while tissue outside the defined area remains untouched. A complete cut in a level is achieved by placing thousands of laser pulses next to each other. Then the cornea flap is lifted up with a precision instrument.

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