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Before LASEK surgery, the eyes are numbed with local anaesthetic eye drops.
The outer layer of the cornea will be treated with an 20% alcohol solution and then detached from the cornea. The outer layer will then either be rolled back or lifted to allow access to the underlying corneal tissue.
Following the corneal mapping and the measurements taken during your evaluation, an excimer laser will then ablate (vaporise) some of the corneal tissue in order to allow light to pass evenly through the cornea to the retina at the back of the eye. A computer system tracks the position of the eye between 60 and 4,000 times per second, depending on the particular laser used by the practitioner, which then redirects the pulses of the laser which are delivered so that precise placement can be achieved.
The outer corneal tissue will then be put back into place and a bandage contact lens put into the eye for up to four days in order to facilitate healing.