photorefractive keratectomy

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Related to photorefractive keratectomy: LASIK


excision of a portion of the cornea; kerectomy.
photorefractive keratectomy a procedure to correct errors of refraction in the eye by using an excimer laser to remove a portion of the anterior part of the cornea, which changes the refraction by creating a new radius of curvature.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pho·to·re·frac·tive ker·a·tec·to·my (PRK),

removal of part of the cornea with a laser to change its shape, and thus to modify the refractive error of the eye (reduce its myopia, for example).
Farlex Partner Medical Dictionary © Farlex 2012

photorefractive keratectomy

Ophthalmology A refractive surgery that corrects myopia by changing corneal conformation Results 78% vision improvement; 3-7% complications–eg, painful healing of cornea, glare. See Refractive surgery. Cf LASIK, Radial keratectomy.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

pho·to·re·frac·tive ker·a·tec·to·my

(PRK) (fōtō-rĕ-fraktiv keră-tektŏ-mē)
Removal of part of the cornea with a laser to change its shape, and thus to modify the refractive error of the eye (e.g., to reduce its myopia).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Photorefractive keratectomy (PRK)

A procedure that uses an excimer laser to make modifications to the cornea and permanently correct myopia.
Mentioned in: Myopia, Radial Keratotomy
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

keratectomy, photorefractive

A surgical procedure on the cornea aimed at correcting ametropia. The epithelium is completely removed over a central diameter of about 7 mm and excimer laser ablation is then carried out on the stroma. A bandage soft contact lens is usually worn afterwards for a few days while the epithelium regenerates. Complications are more common than with either LASEK or LASIK. Useful vision recovers more slowly and pain lasts longer than with the latter procedures. Syn. keratorefractive surgery; laser refractive keratoplasty (LRK); refractive keratoplasty. See corneal ectasia; radial keratotomy.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Arba-Mosquera, "Consecutive myopia correction with transepithelial versus alcohol-assisted photorefractive keratectomy in contralateral eyes: one-year results," Journal of Cataract & Refractive Surgery, vol.
Omdtabrizi, "Photorefractive keratectomy in mild to moderate keratoconus: outcomes in over 40-year-old patients," Indian Journal of Ophthalmology, vol.
Reinstein, "Avoiding serious corneal complications of laser assisted in situ keratomileusis and photorefractive keratectomy," Ophthalmology, vol.
Ayatollahi, "The results of photorefractive keratectomy with mitomycinC in myopia correction after 5 years," Pakistan Journal of Medical Sciences, vol.
In such cases, excimer laser superficial keratectomy techniques should be considered, for example, photorefractive keratectomy (PRK), epithelial laser in situ keratomileusis (Epi-LASIK), or laser subepithelial keratectomy (LASEK) [14, 20, 21].
RE can be treated by optical methods like corrective glasses and contact lenses or surgical methods like LASIK (laser-assisted in situ keratomileusis) or PRK (photorefractive keratectomy).
? photorefractive keratectomy (PRK) - where a small amount of the cornea's surface is removed, and a laser is used to remove tissue and change the shape of the cornea
In addition, laser-assisted vision correction surgeries such as laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) still use ablative technology, which can thin and in some cases weaken the cornea.
Analgesic efficacy and safety of ketorolac after photorefractive keratectomy. Ketorolac Study Group.
Animal experimental studies revealed that topical application of NGF accelerated restoration of corneal sensitivity and promoted cornea epithelial proliferation and nerve regeneration after laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) [85-87].