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- Photorefractive_keratectomy abstract "Photorefractive keratectomy (PRK) and Laser-Assisted Sub-Epithelial Keratectomy (or Laser Epithelial Keratomileusis) (LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer laser to ablate (remove by vaporization) 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. A computer system tracks the patient's eye position 60 to 4,000 times per second, depending on the brand of laser used, redirecting laser pulses for precise placement. Most modern lasers will automatically center on the patient's visual axis and will pause if the eye moves out of range and then resume ablating at that point after the patient's eye is re-centered.The outer layer of the cornea, or epithelium, is a soft, rapidly regrowing layer in contact with the tear film that can completely replace itself from limbal stem cells within a few days with no loss of clarity. The deeper layers of the cornea, as opposed to the outer epithelium, are laid down early in life and have very limited regenerative capacity. The deeper layers, if reshaped by a laser or cut by a microtome, will remain that way permanently with only limited healing or remodelling. With PRK, the corneal epithelium is removed and discarded, allowing the cells to regenerate after the surgery. The procedure is distinct from LASIK (Laser-Assisted in-Situ Keratomileusis), a form of laser eye surgery where a permanent flap is created in the deeper layers of the cornea.".
- Photorefractive_keratectomy thumbnail US_Navy_100217-N-7032B-023_Capt._David_J._Tanzer,_specialty_leader_of_Navy_Refractive_Surgery_and_director_of_Refractive_Surgery_Program_at_Naval_Medical_Center_San_Diego,_performs_a_photorefractive_keratectomy_(PRK)_at_Naval_T.jpg?width=300.
- Photorefractive_keratectomy wikiPageExternalLink RefSurgWaiv.pdf.
- Photorefractive_keratectomy wikiPageExternalLink lasik.php.
- Photorefractive_keratectomy wikiPageExternalLink prk-vs-lasik-eye-surgery-comparison.
- Photorefractive_keratectomy wikiPageExternalLink www.prkrecovery.net.
- Photorefractive_keratectomy wikiPageExternalLink www.transprk.com.sg.
- Photorefractive_keratectomy wikiPageExternalLink watch?v=JvVlTq2R96A.
- Photorefractive_keratectomy wikiPageID "528461".
- Photorefractive_keratectomy wikiPageRevisionID "606116921".
- Photorefractive_keratectomy caption "Photorefractive keratectomy at U.S. Naval Medical Center San Diego.".
- Photorefractive_keratectomy hasPhotoCollection Photorefractive_keratectomy.
- Photorefractive_keratectomy name "Photorefractive keratectomy".
- Photorefractive_keratectomy subject Category:LASIK.
- Photorefractive_keratectomy comment "Photorefractive keratectomy (PRK) and Laser-Assisted Sub-Epithelial Keratectomy (or Laser Epithelial Keratomileusis) (LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer laser to ablate (remove by vaporization) a small amount of tissue from the corneal stroma at the front of the eye, just under the corneal epithelium.".
- Photorefractive_keratectomy label "Cheratectomia fotorefrattiva".
- Photorefractive_keratectomy label "Lasek".
- Photorefractive_keratectomy label "PRK Queratectomía fotorrefractiva".
- Photorefractive_keratectomy label "Photokératectomie réfractive".
- Photorefractive_keratectomy label "Photorefractive keratectomy".
- Photorefractive_keratectomy label "Photorefraktive Keratektomie".
- Photorefractive_keratectomy label "Фоторефракционная кератэктомия".
- Photorefractive_keratectomy label "ラセック".
- Photorefractive_keratectomy label "雷射屈光角膜切削術".
- Photorefractive_keratectomy sameAs Photorefraktive_Keratektomie.
- Photorefractive_keratectomy sameAs PRK_Queratectomía_fotorrefractiva.
- Photorefractive_keratectomy sameAs Photokératectomie_réfractive.
- Photorefractive_keratectomy sameAs Cheratectomia_fotorefrattiva.
- Photorefractive_keratectomy sameAs ラセック.
- Photorefractive_keratectomy sameAs 라섹.
- Photorefractive_keratectomy sameAs Lasek.
- Photorefractive_keratectomy sameAs m.02lxr3.
- Photorefractive_keratectomy sameAs Q565832.
- Photorefractive_keratectomy sameAs Q565832.
- Photorefractive_keratectomy wasDerivedFrom Photorefractive_keratectomy?oldid=606116921.
- Photorefractive_keratectomy depiction US_Navy_100217-N-7032B-023_Capt._David_J._Tanzer,_specialty_leader_of_Navy_Refractive_Surgery_and_director_of_Refractive_Surgery_Program_at_Naval_Medical_Center_San_Diego,_performs_a_photorefractive_keratectomy_(PRK)_at_Naval_T.jpg.
- Photorefractive_keratectomy isPrimaryTopicOf Photorefractive_keratectomy.