Laser Assisted In-Situ Keratomileusis [LASIK]
LASIK is an outpatient procedure in which, under eye drop anesthesia, a thin layer of cornea (flap) is raised after being created with an automated microkeratome. The flap is laid back while still attached to the cornea and then the laser is activated to vaporize cell layers in order to sculpt a new corneal curvature. Finally, the flap is repositioned over the treatment area and within minutes natural forces hold it in its original position on the surface of the cornea for healing.
- The LASIK procedure can correct nearsightedness (myopia), farsightedness (hyperopia) and astigmatism.
- To correct myopia, the laser flattens the curvature of the cornea by removing cell layers located mainly at its centre.
- To correct hyperopia, the laser creates a groove at the periphery of the cornea, therefore making the centre more curved.
- The amount of corneal tissue removed is calculated based on the pre-operative determination of the power of your eye and on its shape.