نتایج جستجو برای: progressive keratoconus

تعداد نتایج: 119620  

2018
Wolf Wonneberger Bertil Sterner Ulrika MacLean Margareta Claesson Madeleine Zetterberg

PURPOSE Corneal tomography is used to assess progression of keratoconus and to direct clinical decisions regarding corneal cross-linking. The purpose of this study was to analyze the variability of repeated Scheimpflug-tomography (Pentacam Classic; Oculus, Wetzlar, Germany) measurements of keratoconic eyes in a clinical setting and to assess the validity of such measurements as a clinical decis...

2012
Erez Bakshi Yaniv Barkana Yakov Goldich Isaac Avni David Zadok

Purpose: To assess the effect of corneal cross-linking on progressive keratoconus in children. Method: In this retrospective study we enrolled nine eyes of nine consecutive children aged 11 to 17 years old who underwent corneal riboflavin-UVA induced cross-linking for progressive keratoconus at the Department of Ophthalmology at Assaf Harofeh Medical Center. They were followed for 6 to 24 month...

2017
Siamak Zarei-Ghanavati Hamid Khakshour Mohammadreza Vejdani Haleh Ghooshkhanei Amirhosein Vejdani

PURPOSE To assess and compare preoperative refractive, aberrometric, topographic, and contrast sensitivity (CS) measurements with postoperative values after corneal collagen cross-linking (CXL) in patients with progressive keratoconus. METHODS Twenty-two eyes of 11 patients with keratoconus were enrolled in this prospective study. Uncorrected distance visual acuity (UDVA), best spectacle corr...

2016
Waleed Ali Abou Samra Dalia Sabry El Emam Rania Kamel Farag Hossam Youssef Abouelkheir

Aim. To compare objective and subjective outcome after simultaneous wave front guided (WFG) PRK and accelerated corneal cross-linking (CXL) in patients with progressive keratoconus versus sequential WFG PRK 6 months after CXL. Methods. 62 eyes with progressive keratoconus were divided into two groups; the first including 30 eyes underwent simultaneous WFG PRK with accelerated CXL. The second in...

Journal: :Journal of cataract and refractive surgery 2015
Frederik Raiskup Anja Theuring Lutz E Pillunat Eberhard Spoerl

PURPOSE To analyze the 10-year results of corneal collagen crosslinking (CXL) for keratoconus. SETTING Department of Ophthalmology, University Hospital, Dresden, Germany. DESIGN Retrospective interventional case series. METHODS The study included eyes treated for progressive keratoconus from 2000 to 2004. Corneal collagen crosslinking was performed by applying riboflavin and ultraviolet-A...

2017
Mahdieh Esmaeilnezhad Alehe Seyyedrasooli

Background and aims: Keratoconus is characterized by corneal ectasia and irregular astigmatism, which can lead to diminished vision and corneal scarring. Keratoconus is a condition that causes corneal ectasia and reduced vision in young adults. A proportion of these patients have progressive disease requiring corneal transplantation. Methods: The databases searched included OVID MEDLINE, MEDLIN...

2015
Igor Knezović Mirna Belovari Višnjić Hrvoje Raguž

Aim. To report a case of 40-year-old male with progressive bilateral keratoconus who had undergone transepithelial phototherapeutic keratectomy (TE-PTK) and corneal collagen cross-linking (CXL) using hypoosmolar riboflavin solution in a same day procedure. Methods. Eye examination showed that UCDVA on both eyes was 0,01 according to Snellen charts, and slit lamp biomicroscopy showed paracentral...

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: :بینا 0
میترا اکبری m akbari ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranدانشگاه علوم پزشکی شهید بهشتی

keratoconus is a non-inflammatory, progressive thinning process of the cornea. it is a relatively common disorder of unknown etiology that can involve each layer of the cornea and often leads to high myopia and astigmatism. computer- assisted corneal topography devices are valuable diagnostic tools for the diagnosis of subclinical keratoconus and for tracking the progression of the disease. the...

Journal: :Journal of refractive surgery 2009
Efekan Coskunseven Mirko R Jankov Farhad Hafezi

PURPOSE To assess the progression of keratoconus in patients treated with collagen cross-linking with riboflavin and ultraviolet A (UVA) irradiation. METHODS Thirty-eight eyes of 19 patients with progressive keratoconus were enrolled in a prospective comparative study. Average follow-up was 9 +/- 2 months (range: 5 to 12 months). The worse eye was treated with collagen cross-linking, and the ...

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