Before the surgery
Much like the lens of a camera that focuses the light onto the film, the front surface of the human-eye called the cornea and the lens inside the eye together form the focusing system of the eye.
LASIK (Laser In-Situ Keratomiliusis)
If you look at the eye, the outermost black circle is called cornea, which is transparent like a watch glass, but every individual has colour of eyes like black, brown, blue, green etc because of Iris behind this cornea
Laser In-Situ Keratomileusis or LASIK, which is a permanent vision correction procedure, is available for treatment of mild to moderate amounts of myopia, hyperopia, and astigmatism.
In Lasik, the microkeratome(blade) or Intralase laser(100% bladefree or all lasers) is used to shave the cornea to create a flap. The flap then is opened like the page of a book to expose tissue just below the cornea's surface.
The microkeratome is a hand-held blade that moves across the eye, cutting the LASIK flap as it goes. LASIK is extremely safe, but if complications do occur, the microkeratome is frequently the cause. The IntraLase Method, by contrast, is a 100% blade-free approach to corneal flap creation - enabling your doctor to create an individualized LASIK flap without a blade ever touching your eye.
By the advantage of IntraLase Method customized well design flap is created by doctor, which enables your doctor to tailor the LASIK flap according to the shape of your eye. Everything from the diameter of your flap to the angle of its edges can be precisely determined. This is important because everyone's eyes are shaped a little differently, and having a corneal flap that's individualized to your eye will help your doctor ensure that you get the best possible results.
During the pre-operative evaluation, a comprehensive evaluation of your eyes will be performed. Your eyes are measured and mapped, and the information is reviewed to detect and isolate any irregularities in the shape of the cornea. Three different types of LASIK are :