3 Laser Eye Surgeries That Can Give You 20-20 Or Better Vision Again
PRK or Photorefractive keratectomy: Laser vision correction differing from LASIK because no corneal flap is created.
Instead, the just the epithelium or surface layer of the cornea is removed.
Then a computer-controlled excimer laser then reshapes the cornea.
Although healing time can take up to 30 days, the cornea's structural integrity is less altered by PRK than with LASIK vision correction.
PRK does not involve a knife, microkeratome, or cutting laser as used in LASIK surgery, but there may be more pain and slower visual recovery.
LASIK or Laser-Assisted In-Situ Keratomileusis: Laser eye surgery vision correction procedure, intended to reduce or eliminate the need for glasses or contact lenses.
LASIK vision correction is performed by creating a corneal flap using a laser or a special knife called a microkeratome.
An excimer laser is used to ablate(remove by vaporization) tiny amounts of corneal tissue just underneath the corneal epithelium to change the shape of the cornea permanently.
Once the reshaping is done, the laser surgeon replaces and secures the flap without the need for stitches.
An eye shield is placed over the eye for protection and to prevent rubbing or pressure on the healing flap.
The LASIK surgical procedure for both eyes takes about 15 minutes start to finish, is relatively painless, and heals quickly.
LASEK or Laser-Assisted Sub-Epithelial Keratectomy or Laser Epithelial Keratomileusis: A new procedure is becoming available that varies from traditional LASIK called LASEK.
This procedure could be a viable alternative for many patients who are not good candidates for LASIK because of thin corneas.
LASEK vision correction uses a trephine to create an epithelial flap rather than a deeper stromal flap as with LASIK.
An alcohol solution is used to preserve the cells in the epithelial flap once it is created and lifted.
The laser vision correction then proceeds like traditional PRK before the epithelial flap is repositioned.
LASEK preserves more of the corneal tissue than LASIK and PRK and may provide a safe alternative for patients with thin corneas.
Instead, the just the epithelium or surface layer of the cornea is removed.
Then a computer-controlled excimer laser then reshapes the cornea.
Although healing time can take up to 30 days, the cornea's structural integrity is less altered by PRK than with LASIK vision correction.
PRK does not involve a knife, microkeratome, or cutting laser as used in LASIK surgery, but there may be more pain and slower visual recovery.
LASIK or Laser-Assisted In-Situ Keratomileusis: Laser eye surgery vision correction procedure, intended to reduce or eliminate the need for glasses or contact lenses.
LASIK vision correction is performed by creating a corneal flap using a laser or a special knife called a microkeratome.
An excimer laser is used to ablate(remove by vaporization) tiny amounts of corneal tissue just underneath the corneal epithelium to change the shape of the cornea permanently.
Once the reshaping is done, the laser surgeon replaces and secures the flap without the need for stitches.
An eye shield is placed over the eye for protection and to prevent rubbing or pressure on the healing flap.
The LASIK surgical procedure for both eyes takes about 15 minutes start to finish, is relatively painless, and heals quickly.
LASEK or Laser-Assisted Sub-Epithelial Keratectomy or Laser Epithelial Keratomileusis: A new procedure is becoming available that varies from traditional LASIK called LASEK.
This procedure could be a viable alternative for many patients who are not good candidates for LASIK because of thin corneas.
LASEK vision correction uses a trephine to create an epithelial flap rather than a deeper stromal flap as with LASIK.
An alcohol solution is used to preserve the cells in the epithelial flap once it is created and lifted.
The laser vision correction then proceeds like traditional PRK before the epithelial flap is repositioned.
LASEK preserves more of the corneal tissue than LASIK and PRK and may provide a safe alternative for patients with thin corneas.
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