Lasik procedure
The following is a basic description of a lasik procedure.
A doctor uses a microkeratome or a laser to create a thin, circular flap in the cornea. The surgeon then removes some corneal tissue underneath the flap using and excimer laser. The exciser laser removes tiny bits from the tissue of the cornea to reshape it. The flap is then put back in place where the corneal tissue was removed. You shouldn't feel any pain during the surgery as your eyes are anesthetized.
The doctor then uses the laser and adjusts it to your particular prescription. You will then look at a target light while the laser sends pulses of light to your cornea. The laser pulses will reshape your cornea. The stronger your prescription, the longer it will take, but it can stop at anytime as the doctor has full control.
If your getting both eyes done, there will be a short break, and if not you will have resting time. Some choose to come back a week later to get the other eye done.
For nearsighted people, the too-steep cornea must be flattened. For those with farsighted eyes, a steeper cornea must be achieved. An eye doctor must decide if your eyes are healthy, and what kind of vision correction you will need and how much laser ablation will be needed. The doctor will also check for dry eyes, which must be fixed before lasik surgery. A corneal topographer must also be used which creates a "map" for you eye.