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Corneal endotheliitis

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https://www.readbyqxmd.com/read/28427301/corneal-endothelial-changes-in-long-term-cannabinoid-users
#1
Nihat Polat, Birgul Cumurcu, Tongabay Cumurcu, İlknur Tuncer
PURPOSE: The aim of this study was to evaluate the effects of long-term cannabis use on the corneal endothelial cells with the specular microscopy. METHODS: The study enrolled 28 eyes of 28 patients diagnosed with cannabinoid use disorder. The cannabinoid group was selected among patients who had been using the substance for 3 days or more per week over the past 1 year. 32 eyes of 32 age- and sex-matched healthy individuals enrolled as control group in the study...
April 20, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28414732/active-transforming-growth-factor-%C3%AE-2-in-the-aqueous-humor-of-posterior-polymorphous-corneal-dystrophy-patients
#2
Andrea Stadnikova, Lubica Dudakova, Pavlina Skalicka, Zdenek Valenta, Martin Filipec, Katerina Jirsova
PURPOSE: Posterior polymorphous corneal dystrophy (PPCD) is characterized by abnormal proliferation of corneal endothelial cells. It was shown that TGF-β2 present in aqueous humor (AH) could help maintaining the corneal endothelium in a G1-phase-arrest state. We wanted to determine whether the levels of this protein are changed in AH of PPCD patients. METHODS: We determined the concentrations of active TGF-β2 in the AH of 29 PPCD patients (42 samples) and 40 cadaver controls (44 samples) by ELISA...
2017: PloS One
https://www.readbyqxmd.com/read/28410963/regional-differences-in-glutathione-accumulation-pathways-in-the-rat-cornea-mapping-of-amino-acid-transporters-involved-in-glutathione-synthesis
#3
Vithushiya Yoganandarajah, Bo Li, Ankita Umapathy, Paul J Donaldson, Julie C Lim
In this study we have sought to complete the identification and localization of uptake pathways involved in accumulating precursor amino acids involved in GSH synthesis in the rat cornea. To do this, we performed reverse transcription PCR (RT-PCR) to identify glutamate transporters (EAAT 1-5) and glycine transporters (GLYT 1-2) at the transcript level. Western blotting was used to verify protein expression, while immunolabeling of sagittal sections was used to localise transporters to the different layers of the cornea...
April 11, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28410727/transection-and-explantation-of-intraocular-lenses-using-femtosecond-lasers
#4
Chandra Bala, Ushasree Pattamatta, Thomas Chan, Jeffrey Shi, Kerrie Meades
We present 2 cases in which a femtosecond laser was used in vitro to transect hydrophilic acrylic intraocular lenses (IOLs). At 8 μJ with 3 μm spot separation and 6 μm line separation, no charring occurred and there was no increase in total organic carbon. In vivo, the IOLs were successfully transected in the capsular bag (Case 1, opaque IOL) and the sulcus (Case 2, subluxated IOL post-pneumatic displacement of submacular hemorrhage) and explanted through a clear corneal incision (∼3.0 mm). At 3 months, in Case 1, the corrected distance visual acuity (CDVA) improved from 6/24 to 6/5, astigmatism improved by 0...
March 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28410724/effects-of-senofilcon-a-mechanical-protector-on-corneal-endothelial-cells-during-phacoemulsification-in-rabbit-eyes-pilot-study
#5
Seonghwan Kim, Deoksun Cha, Young Bin Song, Jung Yeol Choi, Young Keun Han
PURPOSE: To evaluate the effects of a senofilcon A mechanical protector against corneal endothelial cell damage induced by phacoemulsification in rabbit eyes. SETTING: Department of Ophthalmology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, South Korea. DESIGN: Experimental study. METHODS: The endothelial cell count, intraocular pressure (IOP), and central corneal thickness (CCT) were measured before and 3 days after the experiment in 26 rabbit eyes randomized into a test group and control group (6 per group)...
March 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28410548/two-year-clinical-outcome-of-500-consecutive-cases-undergoing-descemet-membrane-endothelial-keratoplasty
#6
Jorge Peraza-Nieves, Lamis Baydoun, Isabel Dapena, Abbas Ilyas, Laurence E Frank, Salvatore Luceri, Lisanne Ham, Silke Oellerich, Gerrit R J Melles
PURPOSE: To evaluate the clinical outcome of 500 consecutive cases up to 2 years after Descemet membrane endothelial keratoplasty (DMEK) and to assess which parameters may have influenced the clinical outcome. METHODS: From a group of 500 eyes (393 patients), which underwent DMEK for Fuchs endothelial corneal dystrophy (FECD), bullous keratopathy, failed corneal transplants and other indications, clinical outcomes [best-corrected visual acuity (BCVA), central endothelial cell density (ECD), and central corneal thickness] were evaluated before, and at 6, 12, and 24 months after DMEK and postoperative complications were documented...
April 12, 2017: Cornea
https://www.readbyqxmd.com/read/28410361/rates-of-intraocular-pressure-elevation-and-use-of-topical-antihypertensive-medication-after-descemet-stripping-automated-endothelial-keratoplasty
#7
Mona Kaleem, Faisal Ridha, Zryan Shwani, Bonnielin Swenor, Jeffrey Goshe, Annapurna Singh
PURPOSE: To investigate intraocular pressure (IOP) elevation and medication augmentation after Descemet stripping automated endothelial keratoplasty (DSAEK) in those with and without glaucoma. METHODS: The records of 379 patients who underwent DSAEK at the Cleveland Clinic Foundation between January 2009 and 2014 were retrospectively reviewed. Postoperative IOP elevations were considered significant if IOP was ≥22 mm Hg on at least 1 follow-up visit or if it increased by ≥10 mm Hg from baseline...
April 12, 2017: Cornea
https://www.readbyqxmd.com/read/28410359/intraoperative-s-stamp-enabled-rescue-of-3-inverted-descemet-membrane-endothelial-keratoplasty-grafts
#8
Peter B Veldman, Zachary M Mayko, Michael D Straiko, Mark A Terry
PURPOSE: To report the clinical outcomes of 3 Descemet membrane endothelial keratoplasty (DMEK) grafts, in which an upside down DMEK graft orientation was discovered after SF6 gas insufflation of the anterior chamber and the orientation was then corrected intraoperatively. METHODS: A total of 371 consecutive DMEK cases using an S-stamp were analyzed and found to include 3 cases in which the DMEK graft was initially elevated with SF6 gas in an upside down orientation, as demonstrated intraoperatively by the S-stamp...
April 12, 2017: Cornea
https://www.readbyqxmd.com/read/28410355/descemetorhexis-without-graft-placement-for-the-treatment-of-fuchs-endothelial-dystrophy-preliminary-results-and-review-of-the-literature
#9
Alfonso Iovieno, Alberto Neri, Anna Maria Soldani, Chantal Adani, Luigi Fontana
PURPOSE: To report our preliminary experience with a central descemetorhexis without graft placement in Fuchs endothelial corneal dystrophy (FECD) and to review the existing literature on the topic. METHODS: A 4-mm central descemetorhexis was performed in 5 patients (4 women, 1 man; mean age: 69.8 ± 8.6 yrs; range: 57-78 yrs) with FECD. All patients had central confluent guttae, undetectable central endothelial cell count, healthy peripheral corneal endothelium, no clinically evident bullous keratopathy, and no ocular comorbidities...
April 13, 2017: Cornea
https://www.readbyqxmd.com/read/28399831/characteristics-of-cases-needing-advanced-treatment-for-intractable-posner-schlossman-syndrome
#10
Kazuichi Maruyama, Yuko Maruyama, Sunao Sugita, Kazuhiko Mori, Yu Yokoyama, Shiho Sanuki-Kunimatsu, Hiroko Nakagawa, Shigeru Kinoshita, Manabu Mochizuki, Toru Nakazawa
BACKGROUND: In Posner-Schlossman syndrome (PSS), which is characterized by recurrent unilateral attacks of ocular hypertension. Surgical treatment is sometimes necessary because intraocular pressure (IOP) cannot be controlled with anti-glaucoma medications. To identify the clinical features of Posner-Schlossman syndrome (PSS) indicative of the need for intraocular pressure (IOP)-controlling surgery. METHODS: This study was a retrospective case-series analysis of the clinical charts of 33 patients diagnosed with PSS, who underwent surgery to control IOP or received medication only...
April 11, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28399068/descemet-membrane-endothelial-keratoplasty-and-refractive-surgery
#11
C Maya Tong, Lamis Baydoun, Gerrit R J Melles
PURPOSE OF REVIEW: Descemet membrane endothelial keratoplasty (DMEK) has become a first-line treatment in corneal endothelial diseases because of its exceptional clinical outcomes and low complication rates. Because of its improved refractive predictability, DMEK is now also considered for managing cases with endothelial decompensation following previous refractive procedures, or in combination with those. This article reviews the clinical outcomes in these cases and discusses the possibility of refractive interventions following DMEK...
April 8, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28399039/characterization-of-corneal-involvement-in-eyes-with-mucous-membrane-pemphigoid-by-in-vivo-confocal-microscopy
#12
Tudor C Tepelus, Jianyan Huang, SriniVas R Sadda, Olivia L Lee
PURPOSE: To describe the morphological features of the corneal epithelial layers, subbasal nerve plexus, stroma, and endothelium in patients with mucous membrane pemphigoid (MMP) as shown by in vivo confocal microscopy (IVCM). METHODS: Central corneal images were captured from 10 healthy age-matched control eyes and 30 eyes with clinically diagnosed MMP by in vivo laser scanning confocal microscopy (HRT III RCM). Morphological changes of the corneal epithelial layers, stroma, and endothelium, characteristics of corneal nerves, and presence of inflammatory dendritic cells (DCs) were evaluated...
April 10, 2017: Cornea
https://www.readbyqxmd.com/read/28399038/intraoperative-optical-coherence-tomography-assisted-descemet-stripping-automated-endothelial-keratoplasty-for-anterior-chamber-fibrous-ingrowth
#13
Tarek A Shazly, Lillian K To, Ian P Conner, Ladan Espandar
PURPOSE: Here, we present the first reported case of intraoperative optical coherence tomography (OCT)-assisted Descemet membrane stripping automated endothelial keratoplasty (DSAEK) in a patient with anterior segment fibrous ingrowth. METHODS: A 61-year-old woman with corneal edema and chronic angle-closure glaucoma secondary to fibrous ingrowth after 2 glaucoma shunt device implantations underwent dissection and removal of anterior chamber fibrous ingrowth and DSAEK...
April 10, 2017: Cornea
https://www.readbyqxmd.com/read/28397149/considering-3d-topography-of-endothelial-folds-to-improve-cell-count-of-organ-cultured-corneas
#14
Clotilde Jumelle, Thibaud Garcin, Anne Sophie Gauthier, Yaël Glasson, Aurélien Bernard, Yann Gavet, Jacques Klossa, Zhiguo He, Sophie Acquart, Philippe Gain, Gilles Thuret
The posterior side of the cornea is covered by the endothelial monolayer, which governs corneal transparency but cannot proliferate. Determination of endothelial cell density (ECD) is therefore the minimal and mandatory quality control in all eye banks. It avoids primary graft failures caused by endothelial insufficiency, and allows allocation of corneas to surgical techniques requiring different numbers of endothelial cells (ECs). Corneas stored in organ culture (17% of grafts worldwide), are characterized by heavy stromal swelling and numerous deep endothelial folds, up to 200 µm high...
April 10, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28397127/a-novel-strategy-to-enhance-angiogenesis-in-vivo-using-the-small-vegf-binding-peptide-pr1p
#15
Avner Adini, Irit Adini, Zai-Long Chi, Ratmir Derda, Amy E Birsner, Benjamin D Matthews, Robert J D'Amato
Therapeutic angiogenesis is an experimental frontier in vascular biology that seeks to deliver angiogenic growth factors to ischemic or injured tissues to promote targeted formation of new blood vessels as an alternative approach to surgical revascularization procedures. Vascular endothelial growth factor (VEGF) is a potent angiogenic signal protein that is locally upregulated at sites of tissue injury. However, therapies aimed at increasing VEGF levels experimentally by injecting VEGF gene or protein failed to improve outcomes in human trials in part due to its short half-life and systemic toxicity...
April 10, 2017: Angiogenesis
https://www.readbyqxmd.com/read/28396609/in-vitro-biomimetic-platforms-featuring-a-perfusion-system-and-3d-spheroid-culture-promote-the-construction-of-tissue-engineered-corneal-endothelial-layers
#16
Shanyi Li, Yuting Han, Hao Lei, Yingxin Zeng, Zekai Cui, Qiaolang Zeng, Deliang Zhu, Ruiling Lian, Jun Zhang, Zhe Chen, Jiansu Chen
Corneal endothelial cells (CECs) are very important for the maintenance of corneal transparency. However, in vitro, CECs display limited proliferation and loss of phenotype via endothelial to mesenchymal transformation (EMT) and cellular senescence. In this study, we demonstrate that continuous supplementary nutrition using a perfusion culture bioreactor and three-dimensional (3D) spheroid culture can be used to improve CEC expansion in culture and to construct a tissue-engineered CEC layer. Compared with static culture, perfusion-derived CECs exhibited an increased proliferative ability as well as formed close cell-cell contact junctions and numerous surface microvilli...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28395990/protective-effects-of-fluoroquinolones-on-uv-induced-damage-of-cultured-ocular-cell-lines
#17
Takashi Nishida, Yoshiki Kuse, Kiyofumi Mochizuki, Masamitsu Shimazawa, Tetsuya Yamamoto, Hideaki Hara
Although the fluoroquinolones have strong antibacterial effects, some of them also have adverse ocular effects such as diplopia, uveitis, optic neuropathy, and retinal detachment. The purpose of this study was to determine whether low concentrations of fluoroquinolones can lessen the cytotoxic effects of ultraviolet (UV) light on different kinds of cultured ocular cells. We studied cultured human corneal endothelial cells (HCECs), a retinal ganglion cell line (RGC-5), a mouse-derived photoreceptor cell line (661W), a human adult retinal pigment epithelial cell line (ARPE-19), primary retinal cells, and primary human RPE cells...
April 7, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28395029/mitochondrial-and-morphologic-alterations-in-native-human-corneal-endothelial-cells-associated-with-diabetes-mellitus
#18
Benjamin T Aldrich, Ursula Schlötzer-Schrehardt, Jessica M Skeie, Kimberlee A Burckart, Gregory A Schmidt, Cynthia R Reed, M Bridget Zimmerman, Friedrich E Kruse, Mark A Greiner
Purpose: To characterize changes in the energy-producing metabolic activity and morphologic ultrastructure of corneal endothelial cells associated with diabetes mellitus. Methods: Transplant suitable corneoscleral tissue was obtained from donors aged 50 to 75 years. We assayed 3-mm punches of endothelium-Descemet membrane for mitochondrial respiration and glycolysis activity using extracellular flux analysis of oxygen and pH, respectively. Transmission electron microscopy was used to assess qualitative and quantitative ultrastructural changes in corneal endothelial cells and associated Descemet membrane...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28393322/anti-angiogenic-effect-of-hexahydrocurcumin-in-rat-corneal-neovascularization
#19
Chien-Neng Kuo, Ching-Hsein Chen, San-Ni Chen, Jou-Cheng Huang, Li-Ju Lai, Chien-Hsiung Lai, Chia-Hui Hung, Chien-Hsing Lee, Chung-Yi Chen
AIM: This study was to investigate the anti-angiogenic effect of hexahydrocurcumin (HHC) to evaluate gene (p-basic fibroblast growth factor (bFGF)-SAINT-18 & p-vascular endothelial growth factor (VEGF)-SAINT-18 complex)-induced corneal neovascularization (CorNV) in rats. METHODS: CorNV was induced in 24 eyes of 24 rats. Four groups (Group A: 0 μg, B: 0.01 μg, C: 0.1 μg, and D: 1 μg) of HHC were prepared and implanted into the rat subconjunctival substantia propria 1...
April 9, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28392939/thinner-corneas-appear-to-have-more-striking-effects-of-corneal-collagen-crosslinking-in-patients-with-progressive-keratoconus
#20
Yunfei Han, Yanyun Xu, Wei Zhu, Yuling Liu, Zhen Liu, Xiaoxiao Dou, Guoying Mu
Purpose. To analyze the outcomes and difference after UVA/riboflavin corneal collagen crosslinking (CXL) in four different corneal thickness groups of patients with progressive keratoconus. Methods. Retrospective study. Eyes with progressive keratoconus after CXL were divided into 4 subgroups as follows: group 1, thinnest corneal thickness (TCT) ≤ 400 µm; group 2, 400 µm < TCT ≤ 450 µm; group 3, 450 µm < TCT ≤ 500 µm; group 4, TCT ≥ 500 µm. Baseline, 6-month, and 12-month visual acuity, corneal topography, TCT, and endothelial cell density were evaluated...
2017: Journal of Ophthalmology
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