If you are suffering from a corneal deformation or with myopic problem in, PRK surgery can be the best solution for you. Photo Refractive Keratectomy (PRK surgery) is the medical name for such a surgical operation. It involves producing a thin flap on tissue of cornea in the eye. The flap is then folded to restructure the tissue underneath with the help of laser rays. Eventually the flap is dislodged. The operated eye will cure of its own to retrieve after the surgery procedure. Commonly, PRK surgery is referred as laser surgery or PRK LASIK surgery.
Different Types of LASIK Surgery
The acronym LASIK may be said to be an extension of laser aided in place. PRK surgery or Kertomileusis is a form of refractive surgery generally employed for reshaping the deformed cornea. It needs to make a small opening in the shape of a slit below the flap in the cornea so that the deformation of keratomileusis (cornea) can be corrected. PRK surgery is different from LASIK surgery. PRK surgery procedure employs extremely special excimer laser for setting right the refractive defects in the cornea to better the vision. The requirement of ophthalmic accessories like glasses or contacts is mostly eliminated after PRK surgery.
Different from PRK surgery, LASIK surgery has been used for a long for reshaping eye cornea. The cornea is a transparent layer on the top of eye and it is remolded. This type of surgery has been using excimer rays for so many years. The credit of discovery of this type of surgery goes to a Greece called Loannis Pallikaris who applied this procedure in 1991 for the first time.
LASIK surgery process involves three steps.
The first stage is making of a flap of corneal tissue like PRK surgery. The procedure involves in putting a corneal suction ring right on the eye to be operated so that it stays in position. During this step, usually tiny blood vessels erupt and results in subconjunctival hemorrhage. Thus the blood seeps out over the white portion (sclera) of eye. This is not very serious. It is an innocuous side effect and it heals up itself in a couple of weeks. The vision in the eye getting operated becomes hazy and dim. When the eye is made’ unconscious’ during the operation, the flap is produced. Unlike PRK LASIK surgery a metallic blade (microkeratome) or Intra LASIK is mostly used for carrying out this. A bunch of small closely crouched bubbles is formed within eye cornea. Next, one end of the formed flap is folded up in the form of a hinge. The flap is now folded back to expose the middle part of cornea (storma). It is pulled and closed back again.
The storma in cornea is reshaped by employing excimer laser beam. This liquefies the tissue which ultimately gets evaporated in a controlled atmosphere. It is ascertained that no harm is done to the adjoining storma. The process does not need any heat or burning for removing tissue, which is slowly got rid of in form of extremely thin layers with a thickness of a few microns. With the help of laser, the retrieval process is much faster than PRK surgery. The vision is blurred when the flap is pulled up.. The patient may get a moderate freaking out effect.
When the stormal layer of cornea has been remolded using laser, the LASIK flap is to be fixed around the operated area very cautiously by the operating surgeon. There may be air bubbles, pieces of tissue or debris, which is to be cleaned properly. In eye surgery, some adhesives are also utilized to install the flap in its position till eye is completely healed.
PRK surgery procedure is a different type of eye operating process and it varies a lot from basic LASIK surgery.