Refractive eye surgery procedure that employs a computer-controlled Excimer laser system to sculpt by ablation (vaporize) the central corneal zone, or visual axis. By changing the shape of the patient's cornea, the eye care surgeon can correct some cases of nearsightedness, farsightedness and astigmatism. See Photorefractive Keratectomy, Refractive Surgery in Eye Care Encyclopedia. See Free Eye Tests.

surgery using light energy (laser) to improve near- and far-sightedness and astigmatism; abbreviated as PRK

A type of corrective eye surgery.

See PRK.

Refractive surgery to eliminate myopia by flattening the central portion of the cornea with a laser.

In this procedure, the Excimer laser is used to remove the surface of the cornea to change its shape. A raw surface is left to heal. Most useful in low degrees of myopia only. Poor results in high myopia, astigmatism and long-sightedness.

Another term for laser correction of nearsightedness.

a surgical procedure utilizing an excimer laser to reshape the central cornea to a flatter shape for people who are nearsighted and a more curved surface for people who are farsighted. PRK techniques can also be used to correct astigmatism. Also known PRK.

(PRK) is a non-invasive procedure that permanently corrects certain errors in vision. PRK is accomplished with an eximer laser, a special kind of laser that uses computer-controlled pulses of cool light to remove a layer of tissue less than one micron thick from the other surface of the cornea. (A human hair is about _ microns thick) In PRK no scalpels are used. Since the cornea is responsible for most of the eye's focusing power, the change in its curvature achieved with PRK results in improved vision. Currently, PRK can be used to correct myopia and astigmatism. PRK is performed under topical anesthesia, takes only a few minutes to complete, and involves only about 10 to 20% of the outermost surface of the eye.

PRK: a surgical procedure using an excimer laser to remove corneal tissue to effect an alteration of the refractive error

A laser surgery to correct farsightedness, nearsightedness and astigmatism. An excimer laser beam is used to reshape the front of the cornea. The laser beam removes small amounts of tissue from the front of the cornea.

Also called PRK, Photorefractive Keratectomy is a surgical procedure that involves reshaping the cornea using a laser beam. Unlike LASIK, where a flap is cut in the cornea, PRK involves reshaping the surface of the cornea. Once healed, the shaped cornea allows light to focus onto the retina properly, resulting in clearer vision.

Surgical procedure using an excimer laser to fashion the central cornea to treat refractive errors

surgical procedure using an excimer laser to change the shape of the cornea.

A surgical procedure in which the doctor uses an excimer laser to reshape the cornea without creating a flap (as is done in LASIK) to correct vision problems. Go to Top

Commonly referred to as PRK, it is a common laser vision correction procedure. PRK uses an excimer laser to remove tissue from the surface of the cornea.

Surgical procedure using the excimer laser to reshape the front surface of the eye, the cornea, to correct refractive errors. In this procedure, the laser pulses are applied directly through the surface of the cornea.

Photorefractive keratectomy (PRK) and Laser-Assisted Sub-Epithelial Keratectomy (LASEK) are laser eye surgery procedures intended to correct a person's vision and reduce their dependency on glasses or contact lenses. The procedures permanently changes the shape of the anterior central cornea using an excimer laser to ablate (burn off) a small amount of tissue from the corneal stroma at the front of the eye, just under the corneal epithelium. The outer layer of the cornea is removed prior to the ablation.