The most widely worldwide publicized technique is LASIK
, due to its safety, efficacy and predictability. LASIK
is done in the outpatient setting (without hospitalization), and the anesthesia used is made with drops.
Next, a device is placed that holds the eyelids so the eyes do not close during treatment.
The application of the laser can only be performed after lifting a small corneal film (corneal FLAP), which is achieved through an apparatus called Microkeratome. This consists of placing a ring over the eye that will put some pressure on it (painless but annoying maneuver). During this phase, the vision becomes very blurred, being a good sign to continue.
Then a small instrument is placed which will automatically create a film (FLAP). This maneuver represents the most delicate part of the surgery, and lasts only 10 seconds, and the patient should be calm and quiet. After lifting the FLAP is done the laser, that will reshape the cornea according to the previous graduation introduced in the computer. This maneuver is completely painless.
After this maneuver, the FLAP is repositioned on the cornea, gently, in order to protect from the action of the laser. The latest advances in technology allow greater safety in this surgery by making FLAP's increasingly thin, perfect (using disposable razors) and central ablations (laser with eye-tracker), the laser follows the movements of the eye.