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corneal cross linking

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https://www.readbyqxmd.com/read/29903589/-corneal-collagen-cross-linking-to-treat-infectious-keratitis
#1
REVIEW
R Atia, L Jouve, J Knoeri, C Georgeon, L Laroche, V Borderie, N Bouheraoua
Infectious keratitis are a frequent cause of ocular morbidity. Today, new treatments are necessary to combat the emergence of antibiotic resistant germs. Corneal collagen cross-linking has been suggested to treat corneal infectious (PACK-CXL). Its action would be both antimicrobial and protective for the cornea, increasing its biochemical resistence to proteolytic enzymes. In vivo, PACK-CXL might demonstrate good efficacy against bacterial keratitis, contrary to herpetic keratitis for which it is contraindicated...
June 11, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29895115/-the-clinical-study-of-corneal-cross-linking-with-preserved-corneal-epithelial-flap-in-thin-keratoconic-corneas
#2
J J Sun, X J Huang, W Y Shi, T Wang
Objective: To evaluate the therapeutic effect of corneal collagen cross-linking (CXL) with preserved corneal epithelial flap and isotonic riboflavin for treatment of keratoconus eyes with thin corneas. Methods: Prospective case-control study. Twenty two eyes of 20 patients (16 males and 4 females, with age of 23.5±4.9), who have been diagnosed with progressive keratoeonus and the comeal stroma thickness of whom were less than 400μm (without the epithelium), were included in this study. Corneal collagen crosslinking was performed under preserved corneal epithelial flap (8...
June 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29889297/long-term-results-of-corneal-cross-linking-for-terrien-s-marginal-degeneration
#3
José Lamarca, Borja Salvador-Culla, Carlos Fernández-Vega, Rafael I Barraquer
PURPOSE: To report the long-term clinical outcomes of a patient with Terrien's marginal degeneration who underwent successful peripheral corneal cross-linking (CXL) to arrest progression. METHODS: Clinical assessment included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), corneal topography, anterior segment optical coherence tomography, ultrasonic pachymetry, corneal hysteresis, and corneal resistance factor. Eccentric epithelium-off CXL was performed in both eyes after limbal conjunctival resection...
June 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29889294/corneal-epithelial-remodeling-after-standard-epithelium-off-corneal-cross-linking-in-keratoconic-eyes
#4
Jeferson Lautert, Dharmil Doshi, Francis W Price, Marianne O Price
PURPOSE: To evaluate remodeling of the corneal epithelium after epithelium-off corneal cross-linking (CXL). METHODS: In this prospective single-center study, 93 eyes of 93 patients with progressive keratoconus underwent standard CXL. The maximum keratometry was assessed before and after CXL with Scheimpflug imaging, and the epithelial thickness profile across the central 5 mm of the cornea was assessed with spectral-domain optical coherence tomography anterior segment imaging...
June 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29867077/the-mucosal-surfaces-of-both-eyes-are-immunologically-linked-by-a-neurogenic-inflammatory-reflex-involving-trpv1-and-substance-p
#5
Mauricio Guzmán, Maximiliano S Miglio, Nadia R Zgajnar, Ana Colado, María B Almejún, Irene A Keitelman, Florencia Sabbione, Federico Fuentes, Analía S Trevani, Mirta N Giordano, Jeremías G Galletti
Immunological interdependence between the two eyes has been reported for the cornea and the retina but not for the ocular mucosal surface. Intriguingly, patients frequently report ocular surface-related symptoms in the other eye after unilateral ocular surgery. Here we show how unilateral eye injuries in mice affect the mucosal immune response of the opposite ocular surface. We report that, despite the lack of lymphatic cross-drainage, a neurogenic inflammatory reflex in the contralateral conjunctiva is sufficient to increase, first, epithelial nuclear factor kappa B signaling, then, dendritic cell maturation, and finally, expansion of effector, instead of regulatory, T cells in the draining lymph node, leading to disrupted ocular mucosal tolerance...
June 4, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29863545/changes-in-central-corneal-thickness-with-corneal-collagen-cross-linking
#6
Maddalena De Bernardo, Nicola Rosa
No abstract text is available yet for this article.
May 31, 2018: Cornea
https://www.readbyqxmd.com/read/29862655/comparison-of-corneal-collagen-cross-linking-pack-cxl-and-voriconazole-treatments-in-experimental-fungal-keratitis
#7
Hüseyin Baran Özdemir, Ayşe Kalkancı, Kamil Bilgihan, Pınar Uyar Göçün, Betül Öğüt, Funda Karakurt, Merve Erdoğan
PURPOSE: To compare the antifungal efficacy of corneal collagen cross-linking with photoactivated riboflavin (PACK-CXL) and voriconazole in experimental Fusarium solani and Candida albicans keratitis models. METHODS: Sixty-four corneas of 32 New Zealand rabbits were included and divided into two main groups. Intrastromal injection of Fusarium and Candida suspensions was performed, and it was observed that keratitis was formed on the third day. Both groups were randomly separated into the following four groups: control, PACK-CXL, voriconazole and PACK-CXL combined with voriconazole...
June 4, 2018: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29847492/comparison-of-epithelium-off-versus-transepithelial-corneal-collagen-cross-linking-for-keratoconus-a-systematic-review-and-meta-analysis
#8
Daizong Wen, Benhao Song, Qi Li, Ruixue Tu, Yingying Huang, Qinmei Wang, Colm McAlinden, David OʼBrart, Jinhai Huang
PURPOSE: To systematically compare standard epithelium-off corneal collagen cross-linking (SCXL) and transepithelial corneal collagen cross-linking (TECXL) for treating keratoconus. METHODS: PubMed, EMBASE, the Cochrane Library, the US trial registry (ClinicalTrials.gov), VIP Database, Wanfang Databse, and China National Knowledge Infrastructure searches up to February 2017 were conducted. Primary outcomes were changes at 1 year in uncorrected distance visual acuity, maximum keratometry (Kmax), and mean keratometry (mean K)...
May 25, 2018: Cornea
https://www.readbyqxmd.com/read/29846207/herpetic-eye-disease-study-lessons-learned
#9
Tanja Kalezic, Mostafa Mazen, Eric Kuklinski, Penny Asbell
PURPOSE OF REVIEW: Ophthalmic herpes simplex virus (HSV) of the anterior segment is responsible for a range of corneal complications such as scarring, thinning, neovascularization, and severe loss of vision. This review provides current guidelines for treating anterior segment disease related to HSV. RECENT FINDINGS: We first review findings from the Herpetic Eye Disease Study (HEDS) clinical trials, and then review new topical and antiviral therapies developed since the HEDS studies...
July 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29804113/optimizing-genipin-concentration-for-corneal-collagen-cross-linking-an-ex-vivo-study
#10
Almutez M Gharaibeh, Virginia Saez, Nerea Garcia, Laurent Bataille, Jorge L Alió
PURPOSE: Studying genipin variable concentrations, treatment durations, and delivery methods as a substance to increase corneal stiffness by inducing corneal collagen cross-linking (CXL). MATERIALS AND METHODS: 100 bovine corneas treated with different genipin concentrations (0.1, 0.5, and 1%) and treatment durations (15 min, 40 min, 2 h, and 3 days) through different delivery methods compared to 10 controls treated with riboflavin/UV. Histology examination, enzymatic digestion with collagenase and thermal differential scanning calorimetry were performed on the different samples...
May 25, 2018: Ophthalmic Research
https://www.readbyqxmd.com/read/29799859/transient-viscous-response-of-the-human-cornea-probed-with-the-surface-force-apparatus
#11
Bruno Zappone, Navinkumar J Patil, Marco Lombardo, Giuseppe Lombardo
Knowledge of the biomechanical properties of the human cornea is crucial for understanding the development of corneal diseases and impact of surgical treatments (e.g., corneal laser surgery, corneal cross-linking). Using a Surface Force Apparatus we investigated the transient viscous response of the anterior cornea from donor human eyes compressed between macroscopic crossed cylinders. Corneal biomechanics was analyzed using linear viscoelastic theory and interpreted in the framework of a biphasic model of soft hydrated porous tissues, including a significant contribution from the pressurization and viscous flow of fluid within the corneal tissue...
2018: PloS One
https://www.readbyqxmd.com/read/29796439/various-therapies-for-ocular-surface-diseases
#12
Alina Gheorghe, Ancuţa Teodora Rosoga, Fildys Mrini, Iulia Vărgău, Florentina Gherghiceanu
This paper aims to discuss various therapeutical strategies (corneal cross-linking, amniotic membrane transplantation with or without autologous serum application, medical regenerative therapy) for treating ocular surface diseases according to medical indications, etiology, local and general status of the patient. Besides the evolution and treatment of the lesions induced by corneal foreign body, ocular burns, neurotrophic keratitis, pterygium removal, Mooren's ulcer, this paper also follows and evaluates the migration, stratification and development of corneal epithelium...
January 2018: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29771749/brillouin-microscopy-assessing-ocular-tissue-biomechanics
#13
Seok Hyun Yun, Dimitri Chernyak
PURPOSE OF REVIEW: Assessment of corneal biomechanics has been an unmet clinical need in ophthalmology for many years. Many researchers and clinicians have identified corneal biomechanics as source of variability in refractive procedures and one of the main factors in keratoconus. However, it has been difficult to accurately characterize corneal biomechanics in patients. The recent development of Brillouin light scattering microscopy heightens the promise of bringing biomechanics into the clinic...
May 15, 2018: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29760442/cross-ancestry-genome-wide-association-analysis-of-corneal-thickness-strengthens-link-between-complex-and-mendelian-eye-diseases
#14
Adriana I Iglesias, Aniket Mishra, Veronique Vitart, Yelena Bykhovskaya, René Höhn, Henriët Springelkamp, Gabriel Cuellar-Partida, Puya Gharahkhani, Jessica N Cooke Bailey, Colin E Willoughby, Xiaohui Li, Seyhan Yazar, Abhishek Nag, Anthony P Khawaja, Ozren Polašek, David Siscovick, Paul Mitchell, Yih Chung Tham, Jonathan L Haines, Lisa S Kearns, Caroline Hayward, Yuan Shi, Elisabeth M van Leeuwen, Kent D Taylor, Pieter Bonnemaijer, Jerome I Rotter, Nicholas G Martin, Tanja Zeller, Richard A Mills, Sandra E Staffieri, Jost B Jonas, Irene Schmidtmann, Thibaud Boutin, Jae H Kang, Sionne E M Lucas, Tien Yin Wong, Manfred E Beutel, James F Wilson, André G Uitterlinden, Eranga N Vithana, Paul J Foster, Pirro G Hysi, Alex W Hewitt, Chiea Chuen Khor, Louis R Pasquale, Grant W Montgomery, Caroline C W Klaver, Tin Aung, Norbert Pfeiffer, David A Mackey, Christopher J Hammond, Ching-Yu Cheng, Jamie E Craig, Yaron S Rabinowitz, Janey L Wiggs, Kathryn P Burdon, Cornelia M van Duijn, Stuart MacGregor
Central corneal thickness (CCT) is a highly heritable trait associated with complex eye diseases such as keratoconus and glaucoma. We perform a genome-wide association meta-analysis of CCT and identify 19 novel regions. In addition to adding support for known connective tissue-related pathways, pathway analyses uncover previously unreported gene sets. Remarkably, >20% of the CCT-loci are near or within Mendelian disorder genes. These included FBN1, ADAMTS2 and TGFB2 which associate with connective tissue disorders (Marfan, Ehlers-Danlos and Loeys-Dietz syndromes), and the LUM-DCN-KERA gene complex involved in myopia, corneal dystrophies and cornea plana...
May 14, 2018: Nature Communications
https://www.readbyqxmd.com/read/29757852/comparison-of-corneal-collagen-cross-linking-protocols-measured-with-scheimpflug-tomography
#15
Mehdi Shajari, Gabriela Sowwa, Gernot Steinwender, Christian Hofmann, Marie-Luise Pahlitzsch, Kerstin Petermann, Thomas Kohnen
PURPOSE: To evaluate the effectiveness of corneal collagen cross-linking with Dresden and accelerated protocols to treat keratoconus by Scheimpflug tomography. METHODS: Fifty-eight eyes with manifest keratoconus were measured preoperatively at least twice with the Pentacam. The difference of relevant variables for keratoconus progression (eg, D value, thinnest pachymetry, Kmax) was established. After evident progression, patients underwent corneal cross-linking (29 eyes with the Dresden protocol and 29 eyes with the accelerated protocol)...
May 1, 2018: Cornea
https://www.readbyqxmd.com/read/29746325/corneal-cross-linking-in-pediatric-patients-evaluating-treated-and-untreated-eyes-5-year-follow-up-results
#16
Lior Or, Assaf Rozenberg, Adi Abulafia, Isaac Avni, David Zadok
PURPOSE: To evaluate the long-term results of corneal collagen cross-linking (CXL) for treatment of pediatric keratoconus and the long-term outcomes of the fellow untreated keratoconic eye in patients younger than 18 years old. METHODS: A retrospective case analysis was performed on 88 eyes of 44 patients aged 18 years or younger, with keratoconus, who underwent CXL in at least 1 eye. Follow-up measurements, for the treated and untreated eye pair, taken up to 5 years after treatment, were compared with baseline values...
May 3, 2018: Cornea
https://www.readbyqxmd.com/read/29738594/bilateral-asymmetric-keratoconus-induced-by-thyrotoxicosis-with-long-term-stability-after-corneal-cross-linking
#17
Ramon Lee, Ahmed El-Massry, Youssef El-Massry, J Bradley Randleman
PURPOSE: To present a case of bilateral, asymmetric keratoconus presenting unilaterally after partial thyroidectomy with delayed presentation in the second eye after thyrotoxicosis, with disease stabilization following corneal cross-linking (CXL). METHODS: Case report and literature review. RESULTS: A 17-year-old girl with a history of Graves' disease underwent partial thyroidectomy without thyroid hormone replacement therapy with normal baseline ophthalmic examination of corrected distance visual acuity (CDVA) of 20/20 and no manifest astigmatism in either eye...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738593/bilateral-keratoconus-induced-by-secondary-hypothyroidism-after-radioactive-iodine-therapy
#18
Ramon Lee, Farhad Hafezi, J Bradley Randleman
PURPOSE: To present a case of new-onset, bilateral, rapidly progressive keratoconus induced by secondary hypothyroidism after radioactive iodine therapy during the sixth decade of life that was successfully treated with corneal cross-linking. METHODS: Case report and literature review. RESULTS: A 53-year-old woman with no ocular complaints but with a history of Graves' disease and thyrotoxicosis was treated with radioactive iodine therapy and oral levothyroxine for secondary acquired hypothyroidism 3 years prior...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738584/corneal-allogenic-intrastromal-ring-segments-cairs-combined-with-corneal-cross-linking-for-keratoconus
#19
Soosan Jacob, Shaila R Patel, Amar Agarwal, Arvind Ramalingam, A I Saijimol, John Michael Raj
PURPOSE: To describe a new technique for the treatment of keratoconus using corneal allogenic intrastromal ring segments (CAIRS). METHODS: CAIRS trephined from donor cornea using a double-bladed trephine were implanted into mid-depth femtosecond laser-dissected channels in the cornea of patients with keratoconus in the 6.5-mm optic zone, followed by accelerated corneal cross-linking (A-CXL)-either conventional or contact lens-assisted CXL (A-CACXL), depending on minimum corneal thickness...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738582/erratum-for-the-relationship-between-mechanical-properties-ultrastructural-changes-and-intrafibrillar-bond-formation-in-corneal-uva-riboflavin-cross-linking-treatment-for-keratoconus
#20
(no author information available yet)
No abstract text is available yet for this article.
May 1, 2018: Journal of Refractive Surgery
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