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Corneal cross-linking

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https://www.readbyqxmd.com/read/29333909/subclinical-inflammatory-response-accelerated-versus-standard-corneal-cross-linking
#1
Alireza Hedayatfar, Hassan Hashemi, Gholamhossein Aghaei, Nahid Ashraf, Soheila Asgari
PURPOSE: To compare the subclinical inflammatory response (as measured by anterior chamber flare) induced after standard (3 mW/cm2, 30 min) and accelerated (18 mW/cm2, 5 min) corneal cross-linking (CXL). METHODS: In this comparative, non-randomized study, patients with progressive keratoconus who underwent standard or accelerated CXL were studied. Laser flare photometery (FM-600; Kowa, Tokyo, Japan) was used to measure anterior chamber flare preoperatively and at 1 week, 1 month, 3 months, and 6 months after the procedure...
January 15, 2018: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29321650/rna-seq-analysis-and-comparison-of-corneal-epithelium-in-keratoconus-and-myopia-patients
#2
Jingjing You, Susan M Corley, Li Wen, Chris Hodge, Roland Höllhumer, Michele C Madigan, Marc R Wilkins, Gerard Sutton
Keratoconus is a common degenerative corneal disease that can lead to significant visual morbidity, and both genetic and environmental factors have been implicated in its pathogenesis. We compared the transcriptome of keratoconus and control epithelium using RNA-Seq. Epithelial tissues were obtained prior to surgery from keratoconus and myopia control patients, undergoing collagen cross-linking and photorefractive keratectomy, respectively. We identified major differences in keratoconus linked to cell-cell communication, cell signalling and cellular metabolism...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319598/corneal-collagen-cross-linking-with-riboflavin-and-ultraviolet-a-light-for-pediatric-keratoconus-ten-year-results
#3
Cosimo Mazzotta, Claudio Traversi, Stefano Baiocchi, Simone Bagaglia, Orsola Caporossi, Antonio Villano, Aldo Caporossi
PURPOSE: To assess the 10-year follow-up efficacy and safety of riboflavin ultraviolet A-induced cross-linking (CXL) in a population of pediatric patients aged 18 years and younger with progressive keratoconus (KC). METHODS: The prospective longitudinal cohort study included 62 eyes of 47 keratoconic patients undergoing epithelium-off CXL who completed 10-year follow-up. The surgical procedure was performed in all patients according to the Siena (Dresden modified) protocol...
January 9, 2018: Cornea
https://www.readbyqxmd.com/read/29319597/repeated-same-day-versus-single-tomography-measurements-of-keratoconic-eyes-for-analysis-of-disease-progression
#4
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 decision-making tool. METHODS: Eighty keratoconic eyes of 45 patients (age range 16-32 years) were examined at baseline and after follow-up periods of 3 to 6 months using 3 consecutive tomography measurements at each visit...
January 9, 2018: Cornea
https://www.readbyqxmd.com/read/29315446/erratum-for-in-vivo-early-corneal-biomechanical-changes-after-corneal-cross-linking-in-patients-with-progressive-keratoconus
#5
(no author information available yet)
No abstract text is available yet for this article.
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29315445/erratum-for-corneal-cross-linking-cxl-standardizing-terminology-and-protocol-nomenclature
#6
(no author information available yet)
No abstract text is available yet for this article.
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29315442/changes-in-corneal-biomechanical-properties-with-different-corneal-cross-linking-irradiances
#7
FangJun Bao, YaRu Zheng, Chang Liu, XiaoBo Zheng, YiPing Zhao, Yuan Wang, LinNa Li, QinMei Wang, ShiHao Chen, Ahmed Elsheikh
PURPOSE: To evaluate whether different corneal cross-linking (CXL) irradiances, all with the same delivered total energy, achieve similar increases in corneal material stiffness. METHODS: One hundred twenty-six healthy white Japanese rabbits were randomly divided into seven groups (n = 18 each). After removing the epithelium of the left corneas, six groups were exposed to riboflavin (0.22% concentration by volume) and ultraviolet-A (370 nm) at different CXL irradiations, all with the same total dose (5...
January 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29300266/visibility-and-depth-of-the-stromal-demarcation-line-after-corneal-collagen-cross-linking-using-anterior-segment-optical-coherence-tomography-comparison-between-isoosmolar-and-hypoosmolar-riboflavin
#8
Louis Lhuillier, Cedric Ghetemme, Mathilde Boiché, Rekia Yahia, Naila Houmad, Mohamed Zaidi, Christophe Goetz, Jean Marc Perone
PURPOSE: To evaluate and compare visibility and depth of the stromal demarcation line (DL) created after corneal collagen cross-linking (CXL) using anterior segment optical coherence tomography (AS-OCT) between 2 groups: CXL with isoosmolar and hypoosmolar riboflavin. METHODS: In this retrospective study performed at Metz-Thionville Regional Hospital, consecutive patients with progressive keratoconus underwent CXL using an accelerated protocol (10 min, 9 mW/cm ultraviolet-A)...
January 3, 2018: Cornea
https://www.readbyqxmd.com/read/29300262/accelerated-corneal-cross-linking-with-photoactivated-chromophore-for-moderate-therapy-resistant-infectious-keratitis
#9
Boris Knyazer, Yonit Krakauer, Yael Baumfeld, Tova Lifshitz, Sabine Kling, Farhad Hafezi
PURPOSE: To evaluate the effect of accelerated corneal cross-linking with photoactivated chromophore (PACK-CXL) as additional treatment for therapy-resistant infectious keratitis. METHODS: In this interventional cohort study, 20 patients (11 men and 9 women), aged 65.5 (interquartile range = 21.5-78.5) years, who were hospitalized for moderate-sized therapy-resistant bacterial corneal ulcers (11/20 microbiologically confirmed) were treated with hypoosmolar 0.1% riboflavin solution and Ultraviolet A (UVA) irradiation for 3 minutes at 30 mW/cm (5...
January 3, 2018: Cornea
https://www.readbyqxmd.com/read/29284455/visual-rehabilitation-in-moderate-keratoconus-combined-corneal-wavefront-guided-transepithelial-photorefractive-keratectomy-and-high-fluence-accelerated-corneal-collagen-cross-linking-after-intracorneal-ring-segment-implantation
#10
Hun Lee, David Sung Yong Kang, Byoung Jin Ha, Jin Young Choi, Eung Kweon Kim, Kyoung Yul Seo, Tae-Im Kim
BACKGROUND: To investigate the effects of combined corneal wavefront-guided transepithelial photorefractive keratectomy (tPRK) and accelerated corneal collagen cross-linking (CXL) after intracorneal ring segment (ICRS) implantation in patients with moderate keratoconus. METHODS: Medical records of 23 eyes of 23 patients undergoing combined tPRK and CXL after ICRS implantation were retrospectively analyzed. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent (MRSE), corneal indices based on Scheimpflug tomography, higher-order aberrations (HOAs), and corneal biomechanical properties were evaluated before and after ICRS implantation, and at 1, 3, and 6 months after combined tPRK and CXL...
December 29, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29283924/comparison-of-changes-in-central-corneal-thickness-during-corneal-collagen-cross-linking-using-isotonic-riboflavin-solutions-with-and-without-dextran-in-the-treatment-of-progressive-keratoconus
#11
Naima Zaheer, Wajid Ali Khan, Shama Khan, M Abdul Moqeet Khan
PURPOSE: To compare intraoperative changes in central corneal thickness (CCT) during corneal cross-linking, using 2 different isotonic riboflavin solutions either with dextran or with hydroxy propyl methylcellulose, in the treatment of progressive keratoconus. METHODS: In this retrospective study, we analyzed records of corneal thickness measurements, taken during various steps of cross-linking. Cross-linking was performed using either isotonic riboflavin with dextran (group A) or isotonic riboflavin with hydroxy propyl methylcellulose (without dextran) (group B)...
December 27, 2017: Cornea
https://www.readbyqxmd.com/read/29279651/mesopic-quality-of-vision-after-accelerated-18-mw-cm2-corneal-cross-linking-mid-term-results
#12
Hassan Hashemi, Mohammad Miraftab, Soheila Asgari
PURPOSE: The purpose of the study was to determine 2-year changes in mesopic higher-order aberrations (HOAs) and contrast sensitivity (CS) after accelerated corneal cross-linking (CXL) in keratoconus patients. MATERIALS AND METHODS: In this before-after interventional case series, patients with progressive keratoconus were subjected to accelerated CXL (18 mW/cm2, 5 min). Patients were examined with the OPD-Scan III and CVS-1000 grating charts under mesopic conditions at baseline and at 12 and 24 months after CXL...
July 2017: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/29259913/trans-epithelial-accelerated-corneal-cross-linking-for-keratoconus-in-children
#13
Andrew Olivo-Payne, Juan Carlos Serna-Ojeda, Erick Hernandez-Bogantes, Alexandra Abdala-Figuerola, Lucero Pedro-Aguilar, Alejandro Lichtinger, Arturo Ramirez-Miranda, Alejandro Navas, Enrique O Graue-Hernandez
The aim of the study is to evaluate the safety and efficacy of trans-epithelial accelerated corneal cross-linking (TE-ACXL) in children with progressive keratoconus. Retrospective, case-series of 23 eyes of 14 children who underwent TE-ACXL. Evaluations were performed at baseline and 1, 3, 6, 12 and 18mo postoperatively. Mean follow-up time of 23.82±3.15mo and mean age was 13.7±1.4y (range 11 to 16y). Mean preoperative uncorrected distance visual acuity changed from 0.92±0.45 logMAR (20/160) to 0.71±0.40 logMAR (20/100) (P=0...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29227513/in-vivo-early-corneal-biomechanical-changes-after-corneal-cross-linking-in-patients-with-progressive-keratoconus
#14
Riccardo Vinciguerra, Vito Romano, Esmaeil M Arbabi, Matthias Brunner, Colin E Willoughby, Mark Batterbury, Stephen B Kaye
PURPOSE: To report early corneal biomechanical changes after corneal cross-linking (CXL) in patients with keratoconus. METHODS: Thirty-four eyes of 34 patients undergoing CXL for progressive keratoconus were included in this prospective clinical study. Dynamic corneal response (DCR) parameters obtained with the Corvis ST (OCULUS Optikgeräte GmbH; Wetzlar, Germany) were assessed at baseline (day of CXL) and after 1 month of follow-up; conversely, corneal tomography with the Pentacam (OCULUS Optikgeräte GmbH) was assessed at baseline and at 1, 3, and 6 months after CXL...
December 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29215396/outcomes-of-corneal-cross-linking-correlate-with-cone-specific-lysyl-oxidase-expression-in-patients-with-keratoconus
#15
Rohit Shetty, Nimisha Rajiv Kumar, Natasha Pahuja, Rashmi Deshmukh, KrishnaPoojita Vunnava, Valsala Gopalakrishnan Abilash, Abhijit Sinha Roy, Arkasubhra Ghosh
PURPOSE: To evaluate the correlation of visual and keratometry outcomes after corneal cross-linking (CXL) in patients with keratoconus with cone epithelium-specific gene expression levels. METHODS: Corneal epithelium was obtained from 35 eyes that underwent accelerated CXL (KXLII, 9 mW/cm for 10 min). Using corneal topography, epithelium over the cone and periphery was obtained separately from each subject. The ratio of gene expression for lysyl oxidase (LOX), matrix metalloproteinase 9 (MMP9), bone morphogenic protein 7, tissue inhibitor of metalloproteinase 1, collagen, type I, alpha 1, and collagen, type IV, alpha 1 (COL IVA1) from the cone and peripheral cornea was correlated with the outcome of cross-linking surgery...
December 5, 2017: Cornea
https://www.readbyqxmd.com/read/29203068/prospective-randomized-trial-of-corneal-cross-linking-riboflavin-dosing-frequencies-for-treatment-of-keratoconus-and-corneal-ectasia
#16
Marianne O Price, Kelly Fairchild, Matthew T Feng, Francis W Price
PURPOSE: To investigate whether the riboflavin dosing frequency affects corneal cross-linking efficacy or safety, given that isotonic riboflavin solution is viscous and each installation coats the corneal surface with a film that absorbs some of the incident ultraviolet A light. DESIGN: Prospective, randomized, single-center equivalence trial. PARTICIPANTS: Patients with progressive keratoconus or ectasia after refractive surgery (n = 510)...
December 1, 2017: Ophthalmology
https://www.readbyqxmd.com/read/29192682/corneal-collagen-cross-linking-in-keratoconus-primum-non-nocere
#17
H Oliphant, M Zarei-Ghanavati, A Shalaby Bardan, A Vasquez-Perez, D O'Brart, C Liu
No abstract text is available yet for this article.
December 1, 2017: Eye
https://www.readbyqxmd.com/read/29189737/novel-artificial-tears-containing-cross-linked-hyaluronic-acid-an-in-vitro-re-epithelialization-study
#18
Arianna Fallacara, Silvia Vertuani, Giacomo Panozzo, Alessandra Pecorelli, Giuseppe Valacchi, Stefano Manfredini
Dry eye syndrome is a common disease which can damage the corneal epithelium. It is treated with eye drops to stimulate tear production and hydrate the corneal surface. The most prescribed artificial tear remedies contain hyaluronic acid (HA), which enhances epithelial wound healing, improving tissue health. To the best of our knowledge, only a few recent studies have investigated cross-linked HA (HA-CL) in eye drops for human applications. This work consists in an in vitro evaluation of the re-epithelialization ability of two different preparations containing a recently synthetized HA cross-linked with urea: 0...
November 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29185116/standard-transepithelial-and-iontophoresis-corneal-cross-linking-clinical-analysis-of-three-surgical-techniques
#19
Settimio Rossi, Carmine Santamaria, Rosa Boccia, Luigi De Rosa, Francesco Maria D'Alterio, Francesca Simonelli, Giuseppe De Rosa
BACKGROUND: To evaluate the clinical results of standard, transepithelial (TE) and iontophoresis (I) corneal cross-linking (CXL), in patients with progressive keratoconus. METHODS: Thirty eyes of 30 patients with progressive keratoconus treated by CXL (10 by standard-CXL, 10 by TE-CXL and 10 by I-TE-CXL) with 12 months of follow-up. Pre- and postoperative ophthalmologic testing were: uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive examination (spherical error, spherical equivalent), corneal topography (corneal astigmatism, simulated maximum, minimum and average keratometry), aberrometry (coma and spherical aberration), pachymetry and endothelial cell density...
November 28, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29183298/differences-in-corneal-clinical-findings-after-standard-and-accelerated-cross-linking-in-patients-with-progressive-keratoconus
#20
Karsten U Kortuem, Efstathios Vounotrypidis, Alexandros Athanasiou, Michael Müller, Alexander Babenko, Christoph Kern, Siegfried Priglinger, Wolfgang J Mayer
BACKGROUND: The purpose of this study was to identify differences in clinical corneal findings after standard and accelerated epithelial off cross-linking (CXL) during a long-term follow-up. METHODS: Two hundred forty-one patients (184 male) were included in this monocentric, retrospective, non-randomized and unmasked study. One hundred forty-eight eyes were treated with the accelerated protocol and 138 with the standard protocol with epithelial off CXL, if diagnosed with keratoconus and a progression in Kmax of more than one dioptre during the preceding 6 months, plus a minimal pachymetry measurement of 400 μm in keratometry (Pentacam, Oculus GmbH, Wetzlar, Germany)...
November 28, 2017: BMC Ophthalmology
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