The clarity of your vision is determined by the shape
Vision 20/20 Protocol Ebook Review of your cornea (the transparent front cover of your eye) and whether light is focused directly onto the retina at the back of your eye. Unclear vision occurs when light is directed in front of or behind the retina rather than directly onto it. Therefore, the goal of laser eye surgery is to reshape the surface of the cornea in order to ensure that light is focused properly.
An important first step in the process is to have a detailed map of your eye recorded. From this the surgeon can determine if you are suitable for laser eye surgery and, if so, exactly how to carry out the procedure for your specific case. Vision surgery is completed using a laser called an excimer. This type of laser emits cool beams of light that vaporise corneal tissue, rather than burning it. Anesthetic drops are put in your eyes in order to numb the area. As well, your eye lids are held open with the use of a retractor. Next, a cut is made into the cornea that is approximately ¼ of its total depth.
A flap is constructed and pulled back to reveal the corneal tissue underneath. The excimer then goes to work at vaporizing tissue and reshaping the cornea. The surgeon is able to control the size, number and position of the pulses of the laser to ensure the removal of only what is needed. The shaping process takes less than a minute. After this the corneal flap is replaced and the procedure is complete. No stitches are needed as a natural suction keeps the flap in place while the eye heals.
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