نتایج جستجو برای: customized prk

تعداد نتایج: 15136  

Journal: :Arquivos brasileiros de oftalmologia 2010
Iane Stillitano Ester Yamazaki Luiz Alberto Melo Juliana Bottos Mauro Campos

PURPOSE To assess clinical outcomes and changes on higher-order aberrations (HOA) after wavefront-guided laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for correction of myopia and myopic astigmatism performed by training-surgeons. METHODS One hundred and seventy patients had customized LASIK (207 eyes) and PRK (103 eyes) performed by surgeons in-training using the...

2012
George D Kymionis Aliki N Limnopoulou Nela Stojanovic Argyro D Plaka Vardhaman P Kankariya

A 32-year-old female patient with progressive keratoconus in her right eye was treated with simultaneous customized photoreactive keratoctomy (PRK) and corneal cross-linking (CXL) with riboflavin and Ultraviolet A (UVA) irradiation. Ten days after the procedure, the patient was presented with foreign body sensation, mild ring-shaped corneal infiltration with vascularization at the limbus and Tr...

Journal: :Journal of refractive surgery 2009
Jackson Barreto Marcelo V Netto Alexandre Reis Mayumi Nakano Milton Ruiz Alves Samir Jacob Bechara

PURPOSE To report topography-guided photorefractive keratectomy (PRK) with mitomycin C (MMC) after penetrating keratoplasty for keratoconus. METHODS A 34-year-old woman with irregular astigmatism after penetrating keratoplasty in the right eye underwent PRK. Topography-guided surface ablation using the customized aspheric treatment zone ablation (CATz) was programmed for a 5.00-mm optical zon...

Journal: :Acta clinica Croatica 2012
Dean Sarić Mirna Belovari Visnjić Iva Krolo Zdravko Mandić

The aim of this study was to compare two different refractive surgery approaches in correction of myopia with or without astigmatism. In patients where one eye underwent sub-Bowman keratomileusis (SBK) and the other eye photorefractive keratectomy (PRK), the objective and subjective results were retrospectively compared during the six-month follow-up. Eighty four patients (168 eyes) were involv...

Journal: :Investigative ophthalmology & visual science 2010
George D Kymionis Dimitra M Portaliou Vasilios F Diakonis Georgios A Kontadakis Maria S Krasia Anastasios G Papadiamantis Efekan Coskunseven Aristofanis I Pallikaris

PURPOSE To report the development of posterior linear stromal haze after simultaneous photorefractive keratectomy (PRK) followed by corneal collagen cross-linking (CXL). METHODS Combined simultaneous customized PRK followed by corneal collagen cross-linking was performed in 23 patients (28 eyes) with keratoconus. Corneas were examined biomicroscopically and by means of confocal microscopy bef...

Journal: :Journal of refractive surgery 2009
Paolo Vinciguerra Fabrizio I Camesasca Harkaran S Bains Silvia Trazza Elena Albè

PURPOSE To report the outcomes of topography-guided photorefractive keratectomy (PRK) for the treatment of myopia with or without astigmatism using the customized aspheric transition zone (CATz) ablation algorithm. METHODS In this study, 335 eyes underwent PRK using the NIDEK Advanced Vision Excimer laser platform (NAVEX). Mean preoperative manifest refraction spherical equivalent was -4.42+/...

Journal: :Journal of refractive surgery 2009
George D Kymionis Georgios A Kontadakis George A Kounis Dimitra M Portaliou Alexandra E Karavitaki Michael Magarakis Sonia Yoo Ioannis G Pallikaris

PURPOSE To present the results after simultaneous photorefractive keratectomy (PRK) followed by corneal collagen cross-linking (CXL) for progressive keratoconus. METHODS Twelve patients (14 eyes) with progressive keratoconus were prospectively treated with customized topography-guided PRK with the Pulzar Z1 (wavelength 213 nm, CustomVis) immediately followed by corneal collagen CXL with the u...

Journal: :Journal of refractive surgery 2012
David T C Lin Simon Holland Johnson C H Tan Gregory Moloney

PURPOSE To report results of a series of highly aberrated corneas treated with a topography-guided excimer laser ablation. METHODS Retrospective, nonrandomized, consecutive series of eyes treated with topography-guided photorefractive keratectomy (TG-PRK) with the customized topographical neutralization technique (TNT). Cases included postoperative refractive surgery decentered ablations, opt...

2017
Yosai Mori Kazunori Miyata Takashi Ono Yusuke Yagi Kazutaka Kamiya Shiro Amano

PURPOSE To compare the results of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) for myopia using a mixed-effects model. METHODS This comparative retrospective study was conducted in 1,127 eyes of 579 patients after LASIK and 270 eyes of 144 patients after PRK who had two or more postoperative follow-ups after 3 months. Uncorrected visual acuity (UCVA), best specta...

2011
A. JOHN KANELLOPOULOS

AUGUST 2011 CATARACT & REFRACTIVE SURGERY TODAY 31 P rogressive, asymmetrical corneal steepening associated with an increase in myopic and astigmatic refractive errors, combined with midperipheral and/or peripheral corneal thinning, represents a constellation of findings in ectatic corneal disorders (eg, keratoconus and pellucid marginal degeneration). These entitites are associated with asymme...

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