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07.08.2007, 00:29
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Photorefractive keratectomy (PRK) is an outpatient procedure generally performed with local anesthetic eye drops (as LASIK) . It is a type of refractive surgery which reshapes the cornea by destroying microscopic amounts of tissue from corneal stroma, using the computer-controlled beam of light (an excimer laser). The difference from LASIK is that all the epithelium is removed (and a bandage contact lens must be used). Recovery time is much longer with PRK than with LASIK, though the final outcome (after 3 months) is about the same (very good). More recently, customized ablation have been performed either with LASIK or PRK.
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07.08.2007, 00:29
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Similar TopicsRe:HitsLast Post
Flap procedures
Consists in cutting a flap in the cornea in order to access the tissue underneath. Automated lamellar keratoplasty (ALK) Laser Assisted In-Situ Keratomileusis (LASIK) is the most commonly performed refractive surgery procedure as of 2007. Surface...
[General]von mgutt		044107.08.2007, 00:29
mgutt
Corneal incision procedures
Radial keratotomy (RK) uses spoke-shaped incisions (usually made with a diamond knife) to alter the shape of the cornea and reduce myopia or astigmatism; this technique has now been largely replaced by the other methods (that use excimer laser)....
[General]von mgutt		0167807.08.2007, 00:29
mgutt
Other Refractive surgery procedures
Thermal keratoplasty is used to correct hyperopia by putting a ring of 8 or 16 small burns surrounding the pupil, and steepen the cornea with a ring of collagen constriction. It can also be used to treat selected types of astigmatism. Laser thermal...
[General]von mgutt		053507.08.2007, 00:30
mgutt
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