If you are tired of your vision problems and want to return to those days when you were free from glasses, contact lenses or blurry images.By reducing or eliminating the need for glasses and contact lenses, LASIK has changed the lives of people around the world.LASIK or Lasik is a type of refractive surgery for correcting myopia, hyperopia, and astigmatism. LASIK is performed by ophthalmologists using a laser.
The LASIK Technique:The LASIK technique was made possible by the Colombia-based Spanish ophthalmologist Jose Barraquer, who, around 1950 in his clinic in Bogotá, Colombia, developed the first micrometeorite, and developed the technique used to cut thin flaps in the cornea and alter its shape, in a procedure he called keratomileusis. Barraquer also researched the question of how much of the cornea had to be left unaltered to provide stable long-term results.
Laser Operation:The operation involves creating a thin flap on the eye, folding it to enable remodeling of the tissue beneath with a laser. The flap is repositioned and the eye is left to heal in the postoperative period.
The operation is performed with the patient awake and mobile; however, the patient is sometimes given a mild sedative (such as Valium) and anesthetic eye drops.
Basic Steps Of LASIK:LASIK is performed in three steps.
- The first step is to create a flap of corneal tissue. The second step is remodeling of the cornea underneath the flap with the laser. Finally, the flap is repositioned.
- The second step of the procedure is to use an Excimer laser to remodel the corneal stoma. The laser vaporizes tissue in a finely controlled manner without damaging the adjacent stoma. No burning with heat or actual cutting is required to ablate the tissue. The layers of tissue removed are tens of micrometers thick. Performing the laser ablation in the deeper corneal stoma typically provides for more rapid visual recovery and less pain than the earlier technique, photo refractive keratectomy.
- After the laser has reshaped the stromal layer, the LASIK flap is carefully repositioned over the treatment area by the surgeon and checked for the presence of air bubbles, debris, and proper fit on the eye. The flap remains in position by natural adhesion until healing is completed.
Factors affecting surgery:
- Because of greater bleeding a slight lengthening of inflammation duration and healing time and some pain during surgery may occur in some cases.
- Although some contact lenses are made of materials with greater oxygen permeability that help reduce the risk of corneal neovascularization, patients considering LASIK are warned to avoid over-wearing their contact lenses. Usually, it is recommended that they discontinue wearing contact lenses days or weeks before the LASIK eye surgery.