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Endothelial corneal dystrophy

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https://www.readbyqxmd.com/read/28320557/study-of-light-scattering-using-c-quant-%C3%A2-in-patients-with-fuchs-endothelial-dystrophy-a-pilot-study
#1
B Castaño-Martín, J Gros-Otero, J Martínez, M Teus
OBJECTIVE: The purpose of this study was to determine the light scattering in patients with Fuchs' endothelial dystrophy without clinically significant corneal oedema, and evaluate its relationship with endothelial cell count, corneal thickness, and corneal biomechanical parameters. MATERIALS AND METHODS: The values of light scattering were measured by C-Quant(®) (Oculus Optikgeräte GmbH, Germany) in 32 eyes of 17 patients diagnosed with Fuchs' endothelial dystrophy without clinically significant corneal oedema...
March 17, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28282692/anterior-and-posterior-lamellar-graft-on-the-same-eye-to-treat-fuchs-endothelial-corneal-dystrophy-the-corneal-sandwich-graft
#2
S Hardy, I Guber, L Franscini, F Majo
No abstract text is available yet for this article.
March 10, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28271013/ultrahigh-resolution-oct-imaging-of-the-human-cornea
#3
René M Werkmeister, Sabina Sapeta, Doreen Schmidl, Gerhard Garhöfer, Gerald Schmidinger, Valentin Aranha Dos Santos, Gerold C Aschinger, Isabella Baumgartner, Niklas Pircher, Florian Schwarzhans, Anca Pantalon, Harminder Dua, Leopold Schmetterer
We present imaging of corneal pathologies using optical coherence tomography (OCT) with high resolution. To this end, an ultrahigh-resolution spectral domain OCT (UHR-OCT) system based on a broad bandwidth Ti:sapphire laser is employed. With a central wavelength of 800 nm, the imaging device allows to acquire OCT data at the central, paracentral and peripheral cornea as well as the limbal region with 1.2 µm x 20 µm (axial x lateral) resolution at a rate of 140 000 A-scans/s. Structures of the anterior segment of the eye, not accessible with commercial OCT systems, are visualized...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28260451/descemet-stripping-automated-endothelial-keratoplasty-our-experience-at-king-hussein-medical-center
#4
Amal Al-Thawabi, Wafa Asfour, Mousa Al-Madani
OBJECTIVES: In this study, we report our experience at King Hussein Medical Center with Descemet stripping automated endothelial keratoplasty. MATERIALS AND METHODS: This study was conducted at King Hussein Medical Center of the Royal Medical Services during the period between January 2015 and January 2016. Patients who underwent Descemet stripping automated endothelial keratoplasty were enrolled in the study. We performed a comprehensive overview of the advantages of the surgery and analyzed the donor tissue selection criteria, indications, detailed surgical techniques of the procedure, and surgical outcomes...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28258620/changes-in-lipidomic-profile-of-aqueous-humour-in-fuchs-endothelial-dystrophy
#5
Javier Cabrerizo, Javier Aritz Urcola, Elena Vecino, Gerrit Melles
PURPOSE: To identify and determine differences in lipid profile of aqueous humour (AH) in patients with Fuchs endothelial corneal dystrophy (FECD). METHODS: Lipidomic profile of eight AH samples of FECD patients and 10 control samples was analysed. Patients with previous history of anterior segment surgery, anterior segment pathology or intraocular injections were excluded. Topical ocular medications within the last 6 months were reported. Aqueous humour (AH) was obtained during the first step of Descemet membrane endothelial keratoplasty in FECD patients and during refractive lensectomy in the control group...
March 4, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28237153/current-indications-and-surgical-approaches-to-corneal-transplants-at-the-university-of-toronto-a-clinical-pathological-study
#6
Ryan Le, Narain Yucel, Shireen Khattak, Yeni H Yucel, Gerald J Prud'homme, Neeru Gupta
OBJECTIVE: To determine the most common reasons and surgical approaches for corneal graft surgery at the Kensington Eye Institute (KEI), University of Toronto. DESIGN: Retrospective cross-sectional study. PARTICIPANTS: A total of 229 consecutive corneal transplants performed at the KEI. METHODS: Demographic, clinical, and pathological data on all 2012 and 2013 corneal transplants were collected. RESULTS: The mean age for corneal transplants was 65 ± 16 years; 39% were full-thickness penetrating keratoplasties (PK) and 61% were partial-thickness...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28211878/pre-descemets-endothelial-keratoplasty-the-pdek-clamp-for-successful-pdek
#7
H S Dua, D G Said
PurposeTo design and produce a clamp that enables good handling of donor sclera-corneal disks, allows air to be injected in the corneal stroma and consistently provides pre-Descemets endothelial keratoplasty (PDEK) tissue by creation of a type-1 big bubble (BB) avoiding a type-2BB by shutting the fenestrations in the periphery of the pre-Descemets layer and preventing escape of air.Patients and methodsA clamp with spring loaded handles attached to two rings of 9 mm diameter and 1 mm width with a side port for insertion of a needle for air injection was designed and produced...
February 17, 2017: Eye
https://www.readbyqxmd.com/read/28159976/screening-and-characterization-of-drugs-that-protect-corneal-endothelial-cells-against-unfolded-protein-response-and-oxidative-stress
#8
Eun Chul Kim, Tetsuya Toyono, Cynthia A Berlinicke, Donald J Zack, Ula Jurkunas, Tomohiko Usui, Albert S Jun
Purpose: To screen for and characterize compounds that protect corneal endothelial cells against unfolded protein response (UPR) and oxidative stress. Methods: Bovine corneal endothelial cells (BCECs) were treated for 48 hours with 640 compounds from a Food and Drug Administration (FDA)-approved drug library and then challenged with thapsigargin or H2O2 to induce UPR or oxidative stress, respectively. Cell viability was measured using the CellTiter-Glo survival assay...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28135362/identification-of-circulating-fibrocytes-and-dendritic-derivatives-in-corneal-endothelium-of-patients-with-fuchs-dystrophy
#9
An-Katrien De Roo, Jasper Wouters, Olivier Govaere, Beatrijs Foets, Joost J van den Oord
Purpose: Fuchs' endothelial corneal dystrophy (FECD) is a degenerative eye disorder affecting 4% of Americans older than 40. It is the leading indication for corneal endothelial (CE) transplantation for which there is a global donor shortage. This study aimed to gain further insight into the pathophysiology of FECD and identify targets for nonsurgical therapy. Methods: CE from patients with late-onset FECD was compared with that of normal controls using microarray expression analysis (n = 4 FECD, n = 4 normal), reverse transcriptase quantitative PCR (n = 9 FECD, n = 8 normal), and immunohistology (n = 55 FECD, n = 15 normal)...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28118661/trinucleotide-repeat-expansion-in-the-transcription-factor-4-tcf4-gene-leads-to-widespread-mrna-splicing-changes-in-fuchs-endothelial-corneal-dystrophy
#10
Eric D Wieben, Ross A Aleff, Xiaojia Tang, Malinda L Butz, Krishna R Kalari, Edward W Highsmith, Jin Jen, George Vasmatzis, Sanjay V Patel, Leo J Maguire, Keith H Baratz, Michael P Fautsch
Purpose: To identify RNA missplicing events in human corneal endothelial tissue isolated from Fuchs' endothelial corneal dystrophy (FECD). Methods: Total RNA was isolated and sequenced from corneal endothelial tissue obtained during keratoplasty from 12 patients with FECD and 4 patients undergoing keratoplasty or enucleation for other indications. The length of the trinucleotide repeat (TNR) CTG in the transcription factor 4 (TCF4) gene was determined using leukocyte-derived DNA analyzed by a combination of Southern blotting and Genescan analysis...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28117276/glutaminolysis-is-essential-for-energy-production-and-ion-transport-in-human-corneal-endothelium
#11
Wenlin Zhang, Hongde Li, Diego G Ogando, Shimin Li, Matthew Feng, Francis W Price, Jason M Tennessen, Joseph A Bonanno
Corneal endothelium (CE) is among the most metabolically active tissues in the body. This elevated metabolic rate helps the CE maintain corneal transparency by its ion and fluid transport properties, which when disrupted, leads to visual impairment. Here we demonstrate that glutamine catabolism (glutaminolysis) through TCA cycle generates a large fraction of the ATP needed to maintain CE function, and this glutaminolysis is severely disrupted in cells deficient in NH3:H(+) cotransporter Solute Carrier Family 4 Member 11 (SLC4A11)...
February 2017: EBioMedicine
https://www.readbyqxmd.com/read/28089285/thick-keratoconic-cornea-associated-with-posterior-polymorphous-corneal-dystrophy
#12
K Zaarour, E Slim, J Antoun, N Waked
INTRODUCTION: We herein report a case of bilateral unusually thick non-edematous keratoconic corneas with associated endothelial features of posterior polymorphous corneal dystrophy (PPCD). CASE REPORT: We report the case of a 27-year-old myopic woman who presented for refractive surgery. Slit lamp exam showed bilateral corneal protrusion with diffuse deep stromal and endothelial vesicular opacities and small paracentral bands. Topography showed generalized advanced corneal steepening in both eyes with increased anterior and posterior central corneal elevations in comparison to the best fit sphere...
January 12, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28079694/eventual-endothelial-failure-after-initial-corneal-clearing-after-a-detached-endothelial-graft-in-fuchs-dystrophy
#13
Takahiko Hayashi, Itaru Oyakawa, Naoko Kato
No abstract text is available yet for this article.
March 2017: Cornea
https://www.readbyqxmd.com/read/28060074/eventual-endothelial-failure-after-initial-corneal-clearing-after-a-detached-endothelial-graft-in-fuchs-dystrophy
#14
Hyunjoo J Lee, Wuqaas M Munir
PURPOSE: To report a case of eventual corneal endothelial cell failure after spontaneous resolution of corneal edema after failed Descemet membrane endothelial keratoplasty (DMEK). METHODS: Retrospective case report. RESULTS: A 56-year-old man with Fuchs endothelial corneal dystrophy underwent cataract and DMEK surgery in the left eye. The transplanted DMEK graft detached in the early postoperative period and formed a peripheral scroll. Despite graft detachment, corneal edema resolved with endothelial cell repopulation of the central cornea...
February 2017: Cornea
https://www.readbyqxmd.com/read/28046031/confirmation-of-the-ovol2-promoter-mutation-c-307t-c-in-posterior-polymorphous-corneal-dystrophy-1
#15
Doug D Chung, Ricardo F Frausto, Aleck E Cervantes, Katherine M Gee, Marina Zakharevich, Evelyn M Hanser, Edwin M Stone, Elise Heon, Anthony J Aldave
PURPOSE: To identify the genetic basis of posterior polymorphous corneal dystrophy (PPCD) in families mapped to the PPCD1 locus and in affected individuals without ZEB1 coding region mutations. METHODS: The promoter, 5' UTR, and coding regions of OVOL2 was screened in the PPCD family in which linkage analysis established the PPCD1 locus and in 26 PPCD probands who did not harbor a ZEB1 mutation. Copy number variation (CNV) analysis in the PPCD1 and PPCD3 intervals was performed on DNA samples from eight probands using aCGH...
2017: PloS One
https://www.readbyqxmd.com/read/28009792/clinical-features-in-children-with-posterior-polymorphous-corneal-dystrophy
#16
Ye Jin Ahn, Soon Il Choi, Hae Ri Yum, Sun Young Shin, Shin Hae Park
PURPOSE: To describe clinical features in children diagnosed with posterior polymorphous corneal dystrophy (PPCD) in their first or second decade of life. METHODS: A retrospective study was performed with the medical records of seven unrelated Korean pediatric patients who were diagnosed with PPCD and were followed up for a minimum of 3 years. Thorough ocular examinations were performed, including best-corrected visual acuity, intraocular pressure, refractive and keratometric measurements, slit-lamp biomicroscopy, and specular microscopy at all visits...
December 22, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28002107/astigmatism-correction-with-toric-intraocular-lenses-in-descemet-membrane-endothelial-keratoplasty-triple-procedures
#17
Hideaki Yokogawa, P James Sanchez, Zachary M Mayko, Michael D Straiko, Mark A Terry
PURPOSE: To report the clinical efficacy of astigmatism correction with toric intraocular lenses (IOLs) in patients undergoing the Descemet membrane endothelial keratoplasty (DMEK) triple procedure and to evaluate the accuracy of the correction. METHODS: Fifteen eyes of 10 patients who received cataract extraction, toric IOL placement, and DMEK surgery for Fuchs corneal dystrophy and cataracts were evaluated. The cylinder power of toric IOLs was determined by an online toric calculator with keratoscopy measurements obtained using Scheimpflug corneal imaging...
March 2017: Cornea
https://www.readbyqxmd.com/read/27994806/descemet-stripping-automated-endothelial-keratoplasty-in-fuchs-endothelial-dystrophy-versus-pseudophakic-bullous-keratopathy
#18
Mohammad Ali Javadi, Sepehr Feizi, Roya Jafari, Firooz Mirbabaee, Vahid Ownagh
PURPOSE: To compare clinical and confocal scan outcomes after Descemet stripping automated endothelial keratoplasty (DSAEK) performed for Fuchs' endothelial dystrophy (FED) versus pseudophakic bullous keratopathy (PBK). METHODS: This retrospective comparative study included 47 consecutive eyes of 39 patients with the diagnosis of FED (n = 29, group 1) or PBK (n = 18, group 2) that underwent DSAEK. Clinical outcomes were compared between the study groups. At the final follow-up examination, confocal microscopy was used to measure and compare central corneal and graft thickness as well as endothelial cell density and morphology between the two groups...
October 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27986425/two-year-course-of-corneal-densitometry-after-descemet-membrane-endothelial-keratoplasty-dmek
#19
Friederike Schaub, Philip Enders, Cornelius Bluhm, Björn O Bachmann, Claus Cursiefen, Ludwig M Heindl
PURPOSE: To investigate the two-year course of corneal densitometry following Descemet membrane endothelial keratoplasty (DMEK) for Fuchs endothelial dystrophy (FED). DESIGN: Retrospective, interventional case series. METHODS: Densitometry values (corneal light backscatter in greyscale units) measured by Scheimpflug-based imaging and clinical records of 160 eyes of 160 patients undergoing DMEK for FED were reviewed. Outcome measures included densitometry data in 4 corneal layers (anterior layer (AL), central layer (CL), posterior layer (PL), and total layer (TL)) and 2 annuli (central annular zone 0-2mm and peripheral zone 2-10mm), central corneal thickness (CCT), best spectacle-corrected visual acuity (BSCVA), and endothelial cell density (ECD) prior to DMEK and at 1, 3, 6, 12, and 24 months postoperatively...
December 13, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27974291/organ-cultured-prestripped-donor-tissue-for-dmek-surgery-clinical-outcomes
#20
Johannes Menzel-Severing, Friedrich E Kruse, Theofilos Tourtas
AIM: To determine whether clinical performance is negatively affected by prestripping Descemet membrane endothelial keratoplasty (DMEK) grafts from organ-cultured corneas. METHODS: We reviewed clinical records of all patients who underwent DMEK surgery for Fuchs endothelial dystrophy between 28 October 2014 and 11 August 2015. Grafts had been prepared from organ-cultured corneoscleral buttons 24 hours prior to surgery or during surgery. We included only patients for which at least one follow-up examination was available at a minimum of 2 months postoperatively...
December 14, 2016: British Journal of Ophthalmology
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