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Corneal endotheliitis

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https://www.readbyqxmd.com/read/27914839/late-in-the-bag-intraocular-lens-dislocation-a-randomized-clinical-trial-comparing-lens-repositioning-and-lens-exchange
#1
Olav Kristianslund, Marianne Råen, Atle E Østern, Liv Drolsum
PURPOSE: To compare the efficacy and safety of 2 operation methods for late in-the-bag intraocular lens (IOL) dislocation. DESIGN: Prospective, randomized, parallel-group surgical trial. PARTICIPANTS: Patients referred to Oslo University Hospital (tertiary referral center). METHODS: We randomly assigned 104 patients (104 eyes) either to IOL repositioning by scleral suturing (n = 54) or to IOL exchange with retropupillary fixation of an iris-claw IOL (n = 50)...
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27914762/distribution-of-the-neuro-regulatory-peptide-galanin-in-the-human-eye
#2
Alexandra Kaser-Eichberger, Andrea Trost, Clemens Strohmaier, Barbara Bogner, Christian Runge, Daniela Bruckner, Bettina Hohberger, Anselm Jünemann, Barbara Kofler, Herbert A Reitsamer, Falk Schrödl
Galanin (GAL) is a neuro-regulatory peptide involved in many physiological and pathophysiological processes. While data of GAL origin/distribution in the human eye are rather fragmentary and since recently the presence of GAL-receptors in the normal human eye has been reported, we here systematically search for sources of ocular GAL in the human eye. Human eyes (n=14) were prepared for single- and double-immunohistochemistry of GAL and neurofilaments (NF). Cross- and flat-mount sections were achieved; confocal laser-scanning microscopy was used for documentation...
November 25, 2016: Neuropeptides
https://www.readbyqxmd.com/read/27907157/human-bone-derived-collagen-for-the-development-of-an-artificial-corneal-endothelial-graft-in-vivo-results-in-a-rabbit-model
#3
Natalia Vázquez, Manuel Chacón, Carlos A Rodríguez-Barrientos, Jesús Merayo-Lloves, Miguel Naveiras, Begoña Baamonde, Jose F Alfonso, Iriana Zambrano-Andazol, Ana C Riestra, Álvaro Meana
Corneal keratoplasty (penetrating or lamellar) using cadaveric human tissue, is nowadays the main treatment for corneal endotelial dysfunctions. However, there is a worldwide shortage of donor corneas available for transplantation and about 53% of the world's population have no access to corneal transplantation. Generating a complete cornea by tissue engineering is still a tough goal, but an endothelial lamellar graft might be an easier task. In this study, we developed a tissue engineered corneal endothelium by culturing human corneal endothelial cells on a human purified type I collagen membrane...
2016: PloS One
https://www.readbyqxmd.com/read/27906816/intraocular-pressure-measurements-after-descemet-membrane-endothelial-keratoplasty
#4
Anna-Karina B Maier, Enken Gundlach, Milena Pahlitzsch, Johannes Gonnermann, Caitlin Corkhill, Eckart Bertelmann, Antonia M Joussen, Matthias K J Klamann, Necip Torun
PURPOSE: Intraocular pressure (IOP) elevation occurs regularly after Descemet membrane endothelial keratoplasty (DMEK). This study evaluated the effect of central corneal thickness (CCT) on the IOP after DMEK. PATIENTS AND METHODS: This prospective study recorded the IOP of 46 eyes from 46 patients preoperatively, and then 1 and 3 months after DMEK. IOP measurement was performed by noncontact pneumatic tonometry (NCT), iCare, Goldmann applanation tonometry (GAT), and dynamic contour tonometry (DCT)...
November 30, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27899387/activation-of-cytomegalovirus-corneal-endotheliitis-following-laser-in-situ-keratomileusis
#5
Tien-En Tan, Chui Ming Gemmy Cheung, Jodhbir S Mehta
A case of Cytomegalovirus (CMV) corneal endotheliitis following laser in-situ keratomileusis (LASIK) is presented. A 32-year-old man presented 3 weeks after uncomplicated myopic LASIK with unilateral LASIK flap oedema, interface fluid accumulation, keratic precipitates, anterior uveitis and raised intraocular pressure. Despite treatment with topical corticosteroids, he had 3 further recurrent episodes. Specular microscopy showed decreased endothelial cell density and aqueous humour. Polymerase chain reaction (PCR) testing was positive for CMV DNA...
November 29, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27899371/refractive-improvements-and-safety-with-topography-guided-corneal-crosslinking-for-keratoconus-1-year-results
#6
Maria Nordström, Maria Schiller, Anneli Fredriksson, Anders Behndig
PURPOSE: To assess the refractive improvements and the corneal endothelial safety of an individualised topography-guided regimen for corneal crosslinking in progressive keratoconus. METHODS: An open-label prospective randomised clinical trial was performed at the Department of Clinical Sciences, Ophthalmology, Umeå University Hospital, Umeå, Sweden. Thirty-seven patients (50 eyes) with progressive keratoconus planned for corneal crosslinking were included. The patients were randomised to topography-guided crosslinking (photorefractive intrastromal crosslinking (PiXL); n=25) or uniform 9 mm crosslinking (corneal collagen crosslinking (CXL); n=25)...
November 29, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27897118/smoking-and-eye-pathologies-a-systemic-review-part-i-anterior-eye-segment-pathologies
#7
Małgorzata Nita, Andrzej Grzybowski
BACKGROUND: Tobacco smoking has detrimental influence on human health and is one of the leading causes of preventable mortality worldwide, associated with lung cancer, chronic obstructive lung disease and cardiovascular disease. AIM: The analysis of the influence of tobacco smoking on pathology of the anterior segment of the eye in adults and children. METHODS: A comprehensive review of the literature performed through MEDLINE and PubMed searches, was published during the period 2000-2016...
November 29, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27893523/variable-size-bead-layer-as-standard-reference-for-endothelial-microscopes
#8
Simona Tufo, Erica Prazzoli, Lorenzo Ferraro, Federica Cozza, Alessandro Borghesi, Silvia Tavazzi
PURPOSE: For morphometric analysis of the cell mosaic of corneal endothelium, checking accuracy and precision of instrumentation is a key step. In this study, a standard reference sample is proposed, developed to reproduce the cornea with its shape and the endothelium with its intrinsic variability in the cell size. METHODS: A polystyrene bead layer (representing the endothelium) was deposited on a lens (representing the cornea). Bead diameters were 20, 25, and 30 μm (fractions in number 55%, 30%, and 15%, respectively)...
November 23, 2016: Cornea
https://www.readbyqxmd.com/read/27890728/the-role-of-alkyl-chain-length-of-monothiol-terminated-alkyl-carboxylic-acid-in-the-synthesis-characterization-and-application-of-gelatin-g-poly-n-isopropylacrylamide-carriers-for-antiglaucoma-drug-delivery
#9
Li-Jyuan Luo, Jui-Yang Lai
To improve ocular bioavailability and extend pharmacological response, this study aims to investigate the role of alkyl chain length of monothiol-terminated alkyl carboxylic acids in the synthesis, characterization, and application of gelatin-g-poly(N-isopropylacrylamide) (GN) biodegradable in situ gelling carriers for antiglaucoma drug delivery. In the presence of mercaptoacetic acid (MAA), mercaptopropionic acid (MPA), mercaptobutyric acid (MBA), or mercaptohexanoic acid (MHA) as a chain transfer agent, the carboxylic end-capped poly(N-isopropylacrylamide) samples were prepared by free radical polymerization technique...
November 24, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27885526/twelve-year-follow-up-of-penetrating-keratoplasty
#10
Takashi Ono, Sosuke Ishiyama, Takeshi Hayashidera, Yosai Mori, Ryohei Nejima, Kazunori Miyata, Shiro Amano
PURPOSE: To evaluate the long-term outcomes of penetrating keratoplasty (PKP) according to the corneal disease diagnosis and the number of PKP procedures performed. METHODS: Five-hundred-and-nine eyes from 403 patients who underwent PKP at Miyata Eye Hospital in Japan from 1998 through 2014, were included in this study. Medical charts were retrospectively examined to ascertain the corneal disease diagnosis and the period of graft survival. Graft survival rates were compared among various corneal disease diagnoses and among the number of PKP procedures performed...
November 24, 2016: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/27873063/-a%C3%A2-new-technique-to-facilitate-donor-preparation-for-dmek-surgery
#11
P W Rieck, T Engels
BACKGROUND: Descemet membrane endothelial keratoplasty (DMEK) is becoming more and more the method of choice to treat corneal endothelial diseases in specialized centers. The reasons that prevent this technique from becoming widespread are the delicate donor tissue preparation. By inverting the curvature of the cornea from convex to concave after mounting onto an artificial anterior chamber, we developed a combined manual delamination and hydrodissection technique, which allows a rapid and endothelium-preserving method of separating donor Descemet membranes from the underlying stroma...
November 21, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27871779/intraocular-pressure-measurement-after-dsaek-by-icare-goldmann-applanation-and-dynamic-contour-tonometry-a-comparative-study
#12
A Achiron, O Blumenfeld, H Avizemer, L Karmona, G Leybowich, V Man, E Bartov, Z Burgansky-Eliash
PURPOSE: Corneal thickness inevitably increases following Descemet's stripping automated endothelial keratoplasty (DSAEK), owing to the addition of a donor graft. The current study compares different devices in assessing post-DSAEK intraocular pressure (IOP). METHODS: We compared IOP values measured by the Goldmann tonometry (GAT), iCare rebound tonometry (iCare) and Pascal dynamic contour tonometry (PDCT) in eyes following DSAEK. Agreement between measurements was calculated with correlation analysis and Bland-Altman plots...
November 18, 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27861311/effect-of-trabeculotomy-on-corneal-endothelial-cell-loss-in-cases-of-postpenetrating-keratoplasty-glaucoma
#13
Ayaka Kusakabe, Naoki Okumura, Koichi Wakimasu, Kanae Kayukawa, Masami Kondo, Noriko Koizumi, Chie Sotozono, Shigeru Kinoshita, Kazuhiko Mori
PURPOSE: The aim of this study was to evaluate the effect of trabeculotomy (TLO) on glaucoma and endothelial cell loss after penetrating keratoplasty (PK). METHODS: A retrospective study was conducted on consecutive patients who underwent PK and in whom more than 24 months of follow-up was available. Patients were categorized into the PK+TLO group [ie, TLO for post-PK glaucoma (n = 10)] and the PK group [PK alone (n = 73)]. Intraocular pressure (IOP) was evaluated during each follow-up examination...
November 16, 2016: Cornea
https://www.readbyqxmd.com/read/27861306/enhancing-dmek-success-by-identifying-optimal-levels-of-trypan-blue-dye-application-to-donor-corneal-tissue
#14
Parag A Majmudar, Lauren Johnson
PURPOSE: The purpose of this study was to determine the correct concentration and duration of application of trypan blue dye to Descemet membrane endothelial keratoplasty (DMEK) donor corneal tissue before transplant to enhance visibility while minimizing damage to the tissue. METHODS: Corneas were precut for DMEK using an 8-mm punch, and each was stained with either 0.06% or 0.15% trypan blue for a duration of 1, 3, or 5 minutes. After staining, each tissue was placed in balanced salt solution and observed to determine how quickly the stain faded from the tissue using a grading system...
November 16, 2016: Cornea
https://www.readbyqxmd.com/read/27853009/outcome-of-transplanted-donor-corneas-with-more-than-6-h-of-death-to-preservation-time
#15
Ashik Mohamed, Sunita Chaurasia, Prashant Garg
PURPOSE: In tropical countries, physicians are skeptic in using corneas with death-to-preservation time (DTPT) >6 h, concerns being endothelial cell viability and microbial contamination on prolonged DTPT. The objective of the study was to investigate these concerns by analyzing the outcomes of corneal transplants performed using donor corneas with DTPT >6 h. MATERIALS AND METHODS: The study was a retrospective case series of 65 transplants performed in 2013 with donor corneas that had DTPT >6 h (range, 6...
September 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27849309/activation-of-rac1-and-rhoa-preserve-corneal-endothelial-barrier-function
#16
María C Ortega, Diana Santander-García, Beatriz Marcos-Ramiro, Susana Barroso, Susan Cox, Ignacio Jiménez-Alfaro, Jaime Millán
Purpose: The corneal endothelium is responsible for the correct hydration of the corneal stroma. Corneal endothelial cells have a low proliferative capacity, so preserving their barrier function under suboptimal conditions that cause osmotic imbalance, such as those arising from corneal pathologies, age, cryopreservation, and transplantation, is essential for maintaining corneal transparency. We have investigated the signaling induced by hyperosmotic shock that reversibly disrupts corneal endothelial barriers in human endothelial cells and in murine corneas...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27836829/one-year-outcome-after-descemet-membrane-endothelial-keratoplasty-dmek-comparing-sulfur-hexafluoride-sf6-20-versus-100-air-for-anterior-chamber-tamponade
#17
Friederike Schaub, Philip Enders, Katharina Snijders, Silvia Schrittenlocher, Sebastian Siebelmann, Ludwig M Heindl, Björn O Bachmann, Claus Cursiefen
PURPOSE: To investigate 1-year clinical outcome and complication rates following Descemet membrane endothelial keratoplasty (DMEK) with sulfur hexafluoride 20% (SF620%) anterior chamber tamponade compared with conventionally used 100% air for primary graft attachment during DMEK surgery. METHODS: Records of 1112 consecutive DMEKs were reviewed retrospectively and grouped by anterior chamber tamponade used during DMEK surgery (SF620% vs 100% air). Outcome measures included intraocular pressure (IOP), best spectacle-corrected visual acuity (BSCVA), endothelial cell density (ECD) and central corneal thickness (CCT) at 1, 3, 6 and 12 months after DMEK surgery...
November 11, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27833450/the-era-of-anti-vascular-endothelial-growth-factor-vegf-drugs-in-ophthalmology-vegf-and-anti-vegf-therapy
#18
REVIEW
Dorota Pożarowska, Piotr Pożarowski
Angiogenesis is a clue process for tissue development and function, both in normal and pathological conditions. This process is regulated by multiple molecular systems. One of the most potent is vascular endothelial growth factor (VEGF) and its receptor (VEGFR) system. Members of this family are involved in new vessel formation in embryogenesis and maturation, as well as in reparative or pathological reactions in later stages. They play a substantial role in regeneration, inflammation, wound healing, as well as in cancer pathology...
2016: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/27827554/differential-effects-of-bevacizumab-ranibizumab-and-aflibercept-on-the-viability-and-wound-healing-of-corneal-epithelial-cells
#19
Seungbum Kang, Hyunsu Choi, Chang Rae Rho
PURPOSE: This study compared the effects of 3 antivascular endothelial growth factor (VEGF) agents (bevacizumab, ranibizumab, and aflibercept) on corneal epithelial cell viability and wound healing using human corneal epithelial cells (HCECs). METHODS: To determine the cytotoxic effects of anti-VEGF agents on HCECs, HCEC viability was determined at various concentrations of these agents. An in vitro migration assay was used to investigate the migration of HCECs treated with 3 anti-VEGF agents...
November 9, 2016: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27824383/360-degree-iris-burns-following-conductive-keratoplasty
#20
Hanefi Çakir, Selim Genç, Emre Güler
PURPOSE: The authors report a case with multiple iris burns after conductive keratoplasty to correct hyperopia. METHODS: Case report. RESULTS: A 52-year-old woman with hyperopia had a previous conductive keratoplasty procedure and underwent a conductive keratoplasty re-treatment 6 months later. Postoperatively, she presented with 360-degree iris burns in both eyes that were correlated with the corneal conductive keratoplasty scars. In addition, specular microscopy revealed decreased endothelial cell density for both eyes...
November 1, 2016: Journal of Refractive Surgery
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