نتایج جستجو برای: customized prk

تعداد نتایج: 15136  

2016
Mirko Resan Miroslav Vukosavljevic Danilo Vojvodic Brigitte Pajic-Eggspuehler Bojan Pajic

PURPOSE To evaluate the participation of proinflammatory cytokines in the acute phase of corneal wound-healing response after excimer laser treatment. METHODS The study included 68 myopic eyes up to -3.0 diopters divided into two groups: 1) eyes treated with laser in situ keratomileusis (LASIK) (n=31) and 2) eyes treated with photorefractive keratectomy (PRK) (n=37). Each group was then divid...

Journal: :Journal of cataract and refractive surgery 2010
Majid Moshirfar Joshua A Schliesser Joann C Chang Thomas J Oberg Mark D Mifflin Richard Townley Myrna K Livingston Christopher J Kurz

PURPOSE To compare visual outcomes between wavefront-guided photorefractive keratectomy (PRK) and wavefront-guided laser in situ keratomileusis (LASIK). SETTING Academic center, Salt Lake City, Utah, USA. METHODS In this randomized prospective study, myopic eyes were treated with wavefront-guided PRK and or wavefront-guided LASIK using a Visx Star S4 CustomVue platform with iris registratio...

2016
Yusuf Yıldırım Onur Ölçücü Abdurrahman Başcı Alper Ağca Engin Bilge Özgürhan Cengiz Alagöz Ali Demircan Ahmet Demirok

OBJECTIVES To compare the postoperative biomechanical properties of the cornea after photorefractive keratectomy (PRK) and small incision lenticule extraction (SMILE) in eyes with low and moderate myopia. MATERIALS AND METHODS We retrospectively examined 42 eyes of 23 patients undergoing PRK and 42 eyes of 22 patients undergoing SMILE for the correction of low and moderate myopia. Corneal hys...

Journal: :Molecular plant 2009
Lucia Marri Mirko Zaffagnini Valérie Collin Emmanuelle Issakidis-Bourguet Stéphane D Lemaire Paolo Pupillo Francesca Sparla Myroslawa Miginiac-Maslow Paolo Trost

The Calvin cycle enzymes glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and phosphoribulokinase (PRK) can form under oxidizing conditions a supramolecular complex with the regulatory protein CP12. Both GAPDH and PRK activities are inhibited within the complex, but they can be fully restored by reduced thioredoxins (TRXs). We have investigated the interactions of eight different chloroplast th...

Journal: :Plant physiology 1998
T Hariharan P J Johnson R A Cattolico

In this study we characterized phosphoribulokinase (PRK, EC 2.7.1. 19) from the eukaryotic marine chromophyte Heterosigma carterae. Serial column chromatography resulted in approximately 300-fold purification of the enzyme. A polypeptide of 53 kD was identified as PRK by sequencing the amino terminus of the protein. This protein represents one of the largest composite monomers identified to dat...

2013
Hassan Hashemi

Purpose: To compare the postoperative results of Epi-LASIK and photorefractive keratectomy-mitomycin (PRK-mitomycin) in patients with moderate to high myopia Methods: For this double-blind clinical trial, samples were randomly selected among those subjects above 20 years of age who were visited for myopia correction and had a spherical equivalent between -4 to -8 D. We randomly performed PRK-mi...

Journal: :Journal of cataract and refractive surgery 2003
Takeshi Miyamoto Shizuya Saika Akio Yamanaka Yoshiji Kawashima Yoshitaka Suzuki Yoshitaka Ohnishi

PURPOSE To compare the wound-healing process in the rabbit cornea after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) with the same refractive correction. SETTING Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan. METHODS Adult albino rabbits (N = 24) were used. One eye of each animal had PRK or LASIK with the same refractive correction. ...

2012
Steven M Christiansen Mark D Mifflin Jason N Edmonds Rachel G Simpson Majid Moshirfar

BACKGROUND The purpose of this study was to evaluate surgically-induced astigmatism after spherical ablation in photorefractive keratectomy (PRK) and laser-assisted in situ keratomileusis (LASIK) for myopia with astigmatism < 1.00 D. METHODS The charts of patients undergoing spherical PRK or LASIK for the correction of myopia with minimal astigmatism of <1.00 D from 2002 to 2012 at the John A...

Journal: :Journal of refractive surgery 2007
Tamer O Gamaly Alaa El Danasoury Akef El Maghraby

PURPOSE To compare refractive outcome, subepithelial haze, and pain after epithelial laser in situ keratomileusis (epi-LASIK) and photorefractive keratectomy (PRK). METHODS In this prospective, randomized study, 32 eyes of 16 patients were treated for myopia with epi-LASIK (epi-LASIK group) in one eye and PRK in the fellow eye (PRK group). All patients underwent ablation using the NIDEK EC-50...

Journal: :Journal of refractive surgery 1998
D O'Day

OBJECTIVES To study the effects of radial keratotomy (RK) and photorefractive keratectomy (PRK) on contrast sensitivity and glare disability using 4 different devices, and to correlate subjective complaints with obj ective scores of visual performance. METHODS Preoperative contrast sensitivity for 30 eyes undergoing RK and 30 eyes undergoing PRK was compared with contrast sensitivity at 1, 3,...

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