Friday, August 2, 2013
Femtosecond lasers are equipped with advanced software through which we can set the number, size, and energy of the laser pulses and the frequency at which they are applied. This software is also used to determine the exact point the laser pulse is applied in terms of in-tissue depth and extent. Therefore, when using a femtosecond laser for creating an incision in the cornea, energy is focused precisely on the desired point on the surface of the cornea or in the stroma. Each pulse causes a microscopic bubble to form. This bubble expands and cleaves the surrounding tissue, a process called photodisruption. By aligning thousands of bubbles, a fine incision can be created in the corneal tissue.