Lasik Q & A

Lasik Laser Eye Surgery Guide
Your Complete Consumer Resource

All About Lasik - If you’re reading this, chances are that you’ve heard something about the amazing procedure called LASIK eye surgery and are considering trying it for yourself. Most potential LASIK patients have the same questions. Here is a compilation of the most common inquiries about LASIK eye surgery.

Current Types of LASIK Laser Procedures and Other Eye Surgery's

PRK, or photorefractive keratectomy, is one of the first corrective eye procedures that was developed. During this procedure the upper layer of cells which cover the cornea, the epithelial layer, are carefully removed. Once this layer of cells is removed the surgeon uses an excimer laser to shape the cornea. How much tissue on the cornea is removed for this reshaping process depends on how bad the person’s eye sight was. PRK is different from the LASIK procedure in that a corneal flap is not created, and so less of the cornea is altered during PRK surgery. This surgery is often used on people who cannot get LASIK because they have very thin corneas.
Custom Wavefront LASIK utilizes some of the latest technology to improve surgical corrective eye procedures. This type of procedure uses Wavefront technology to customize a person’s LASIK correction procedure. The advantage of this technology is that a patient is able to have their cornea mapped down to the smallest detail. The surgeon can then achieve a finer level of correction when the cornea is reshaped. The results of Wavefront LASIK are reportedly an increased quality of vision, reduction in night vision difficulties, and a reduction in halos and glare. The procedure used to correct the cornea is the same as the original LASIK surgery.
Epi-LASIK is an advanced LASIK procedure that was developed in order to address some problems that arose from LASIK procedures. Original LASIK corrects the cornea by cutting a flap within the cornea itself; this procedure can sometimes lead to visual disturbances such as halos, and people with thin corneas who are unable to undergo a regular LASIK procedure. Epi-LASIK is a procedure that corrects vision by lifting up the upper epithelium layer from the top corneal tissues, and then the cornea is sculpted. No flap in the cornea is produced, and the epithelium layer grows back in 3-5 days. Epi-LASIK procedures can be performed on patients with thin corneas and patients with high degrees of myopia.
LASEK, or Laser-Assisted Sub Epithelial Keratectomy, is a corrective eye procedure that has been performed since 1996. This procedure was developed from PRK and LASIK procedures, and was created in order to address complications and problems that arose from PRK and LASIK procedures. The LASEK procedure uses a fine trephine blade and a 20% alcohol solution to gently lift the upper epithelial layer off the surface of the eye and fold the layer back. The cornea is then reshaped with an excimer laser, and the epithelium layer is laid back down and left to heal. The PRK procedure does not preserve the epithelial layer, and the LASIK procedure uses a thicker blade to cut deeper into the cornea.
IntraLase "Bladeless" eye surgery is a corrective eye surgery that uses a laser, instead of a blade, to create a flap in the cornea. This is the only ‘bladeless’ corrective eye surgery technique available at this time. The IntraLase laser works by creating a tiny layer of bubbles just below the surface of the cornea; this layer of bubbles allows the surgeon to gently lift the flap back without using a blade, and then the cornea is reshaped. The flap is folded back down after the surgery is performed and left to heal. The bladeless IntraLase procedure reduces possible complications that can occur from cutting into the cornea.
Presby LASIK, also known as Multifocal LASIK, is a corrective eye procedure which is used to address the eye condition called presbyopia. Presbyopia is a condition which normally develops in many people between 40 to 50 years of age. This condition is characterized by the inability to focus at all distances; multifocal glasses are used in these cases to correct the vision. The Presby LASIK procedure uses a laser to reshape the eye into a design that works just like a multi-focal lens. Often a ‘peak’ is left on the cornea, and then the sides are gradually smoothed down. The end result is the ability to focus on near and far distances at the same time. This procedure has not yet been approved by the FDA; the only way to receive Presby LASIK in the United States is to join a clinical trial.

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