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https://www.readbyqxmd.com/read/29450622/comparison-of-retinal-microvascular-changes-in-eyes-with-high-tension-glaucoma-or-normal-tension-glaucoma-a-quantitative-optic-coherence-tomography-angiographic-study
#1
Huan Xu, Ruyi Zhai, Yuan Zong, Xiangmei Kong, Chunhui Jiang, Xinghuai Sun, Yi He, Xiqi Li
PURPOSE: The aim of this study is to determine and compare the changes in the retinal vasculature in eyes with high-tension glaucoma (HTG) or normal-tension glaucoma (NTG). METHODS: The right eyes of 43 HTG subjects, 33 NTG subjects, and 51 age- and sex-matched normal subjects were included in this cross-sectional study. Signals were projected from the internal limiting membrane to retinal pigment epithelium. The retinal perfused vessel densities in the peripapillary and parafoveal regions were measured automatically with optic coherence tomography angiography and the split-spectrum amplitude-decorrelation angiography algorithm...
February 15, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29444785/longitudinal-changes-in-intraocular-pressure-and-association-with-systemic-factors-and-refractive-error-lingtou-eye-cohort-study
#2
Xiaotong Han, Tangjian Yang, Jian Zhang, Sha Yu, Xinxing Guo, William Yan, Yin Hu, Mingguang He
OBJECTIVES: To investigate the longitudinal changes in intraocular pressure (IOP) and its associations with refractive error and systemic determinants in a Chinese geriatric population. DESIGN: Prospective cohort study. SETTING: Guangzhou Government Servant Physical Check-up Center, Guangzhou, China. PARTICIPANTS: 4413 government employees aged no less than 40 years (41.9% female) attending annual physical and eye examinations were included in this study...
February 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29440700/age-related-changes-in-the-response-of-retinal-structure-function-and-blood-flow-to-pressure-modification-in-rats
#3
Da Zhao, Christine T O Nguyen, Zheng He, Vickie H Y Wong, Anna K van Koeverden, Algis J Vingrys, Bang V Bui
Age-related changes to the balance between the pressure inside the eye (intraocular pressure, IOP) and the pressure inside the brain (intracranial pressure, ICP) can modify the risk of glaucoma. In this study, we consider whether the optic nerve in older rat eyes is more susceptible to acute IOP and ICP modification. We systematically manipulate both ICP and IOP and quantify their effects on ganglion cell function (electroretinography, ERG), optic nerve structure (optical coherence tomography, OCT) and retinal blood flow (Doppler OCT)...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29428935/mir-124-promotes-the-growth-of-retinal-ganglion-cells-derived-from-m%C3%A3-ller-cells
#4
Ye He, Hai-Bo Li, Xin Li, Yi Zhou, Xiao-Bo Xia, Wei-Tao Song
BACKGROUND/AIMS: Retinal Müller cells could be induced to differentiate into retinal ganglion cells (RGCs), but RGCs derived from Müller cells have defects in axon growth, leading to a defect in signal conduction. In this study we aimed to explore the role of miR-124 in axon growth of RGCs derived from Müller cells. METHODS: Müller cells were isolated from rat retina and induced to dedifferentiate into retinal stem cells. The stem cells were infected by PGC-FU-Atoh7-GFP lentivirus and then transfected with miR-124 or anti-miR-124, and the length of axon was compared...
February 5, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29419643/exfoliation-syndrome-a-historical-perspective
#5
Ahti Tarkkanen
The discoverer of exfoliation was John Lindberg of Helsinki, Finland. He conducted his research as a young ophthalmology resident with the aim of elucidating two types of age-related degenerations of the iris and presenting it as an academic thesis. To this end, he had to construct a slitlamp, because they were not commercially available. During this investigation, he paid attention to greyish flakes and fringes on the anterior lens capsule and the pupillary border, which had not been previously described. His material consisted of 202 patients...
February 6, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29419642/reduced-retinal-vessel-density-in-primary-angle-closure-glaucoma-a-quantitative-study-using-optical-coherence-tomography-angiography
#6
Li Zhu, Yuan Zong, Jian Yu, Chunhui Jiang, Yi He, Yali Jia, David Huang, Xinghuai Sun
PURPOSE: To investigate the changes in the retinal vasculature in different parts of the fundus in eyes with primary angle closure glaucoma (PACG). METHODS: Healthy subjects and those with PACG were enrolled. Optical coherence tomography and a split-spectrum amplitude decorrelation angiography algorithm were used to quantify the retinal vessel densities in the parafoveal and peripapillary areas. RESULTS: Thirty-nine eyes from 24 PACG patients and 39 eyes from 20 age- and sex-matched healthy subjects were included...
February 6, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29415658/late-onset-postoperative-mycobacterium-haemophilum-endophthalmitis-masquerading-as-inflammatory-uveitis-a-case-report
#7
Warinyupa Pinitpuwadol, Sucheera Sarunket, Sutasinee Boonsopon, Nattaporn Tesavibul, Pitipol Choopong
BACKGROUND: Although atypical mycobacteria had been increasingly found in various ocular infections in the past decades, a slow-growing Mycobacterium haemophilum (M. haemophilum) was scarcely reported. Similar to tuberculous infection, the presentation can masquerade as low-grade granulomatous intraocular inflammation with partial response to corticosteroids. Besides, the special requirements for culture make this pathogen difficult to diagnose. The study aims to report the clinical presentation and notify the awareness of NTM endophthalmitis among clinicians...
February 7, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29401159/late-spontaneous-dislocation-of-an-ab-interno-gelatin-microstent
#8
Erin A Boese, Manjool Shah
PURPOSE: To report a case of spontaneous dislocation of a gelatin microstent six months after the initial uncomplicated surgery. PATIENTS AND METHODS: We describe a 73-year-old male with a history of advanced primary open angle glaucoma who had previously undergone an unsuccessful micropulse transcleral cyclophotocoagulation (CPC) of the left eye. He underwent an uncomplicated combined phacoemulsification with an ab interno gelatin microstent, but was noted to have a spontaneous dislocation of the microstent six months post-operatively...
February 2, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29394202/urrets-zavalia-syndrome-after-combined-trabeculotomy-trabeculectomy-surgery
#9
Adela Klezlova, Sarah Liebezeit, Verena Prokosch-Willing, Adrian Gericke, Norbert Pfeiffer, Esther Hoffmann
We report a case of a rare complication after trabeculotomy combined with a small trabeculectomy with mitomycin C in a young patient with juvenile glaucoma. The patient underwent uneventful surgery. However, postoperatively, he experienced a long-lasting hypotony with the need of two revision surgeries and two short episodes of high intraocular pressure. He developed a fixed dilated pupil over time.
February 1, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29234807/development-and-validation-of-a-deep-learning-system-for-diabetic-retinopathy-and-related-eye-diseases-using-retinal-images-from-multiethnic-populations-with-diabetes
#10
COMPARATIVE STUDY
Daniel Shu Wei Ting, Carol Yim-Lui Cheung, Gilbert Lim, Gavin Siew Wei Tan, Nguyen D Quang, Alfred Gan, Haslina Hamzah, Renata Garcia-Franco, Ian Yew San Yeo, Shu Yen Lee, Edmund Yick Mun Wong, Charumathi Sabanayagam, Mani Baskaran, Farah Ibrahim, Ngiap Chuan Tan, Eric A Finkelstein, Ecosse L Lamoureux, Ian Y Wong, Neil M Bressler, Sobha Sivaprasad, Rohit Varma, Jost B Jonas, Ming Guang He, Ching-Yu Cheng, Gemmy Chui Ming Cheung, Tin Aung, Wynne Hsu, Mong Li Lee, Tien Yin Wong
Importance: A deep learning system (DLS) is a machine learning technology with potential for screening diabetic retinopathy and related eye diseases. Objective: To evaluate the performance of a DLS in detecting referable diabetic retinopathy, vision-threatening diabetic retinopathy, possible glaucoma, and age-related macular degeneration (AMD) in community and clinic-based multiethnic populations with diabetes. Design, Setting, and Participants: Diagnostic performance of a DLS for diabetic retinopathy and related eye diseases was evaluated using 494 661 retinal images...
December 12, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29170973/primary-acute-angle-closure-glaucoma-complicating-ciliochoroidal-detachment-report-of-four-cases-and-review-of-the-literature
#11
Yan Zhang, Chao Wang, Li Liu, Yingqing Lei, Yue He, Ling Yu
PURPOSE: To describe the ultrasound biomicroscopy (UBM) and B-scan ultrasonography findings and therapeutic approach for ciliochoroidal detachment secondary to acute primary angle-closure glaucoma (APACG) in four patients. We also reviewed the literature. METHODS: Case report and systematic literature review. RESULTS: The four patients were referred to our department for further management of APACG. The UBM and B-scan ultrasonography examinations were conducted 2 days after the beginning of medical treatment and demonstrated ciliochoroidal detachment in four eyes of the four patients...
November 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29135719/corneal-biomechanical-properties-in-high-myopia-measured-by-dynamic-scheimpflug-imaging-technology
#12
Miao He, Wei Wang, Hui Ding, Xingwu Zhong
SIGNIFICANCE: The cornea is a viscoelastic tissue with viscous and elastic properties. The information of corneal biomechanical changes in high myopia has implications for understanding the pathogenesis of high myopia and primary open angle glaucoma. However, the knowledge of corneal biomechanics in high myopia is limited. PURPOSE: To compare the corneal biomechanical properties in high-myopia subjects and emmetropia subjects. METHODS: Dynamic Scheimpflug imaging technology was used to measure intraocular pressure, central corneal thickness, and corneal biomechanical parameters, including time at the first applanation, velocity at the first applanation, length at the first applanation, deformation amplitude at the first applanation, time at the second applanation, A2V (velocity at the second applanation), length at the second applanation (A2L), deformation amplitude at the second applanation, time at the highest concavity, radius curvature at the highest concavity (HCR), maximal deformation amplitude (MDA), and peak distance...
December 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/29118839/acute-angle-closure-glaucoma-a-potential-blind-spot-in-critical-care
#13
Anna Petsas, George Chapman, Richard Stewart
We report a case of a 69-year-old gentleman who developed an acutely painful eye with loss of visual acuity whilst on the critical care unit. He was admitted three days previously with an infective exacerbation of chronic obstructive pulmonary disease requiring invasive mechanical ventilation. In addition, he received intravenous antibiotics, steroids, nebulised bronchodilators and intravenous aminophylline, together with noradrenaline for blood pressure support. On development of visual symptoms, an emergency ophthalmology review diagnosed acute angle closure glaucoma...
August 2017: Journal of the Intensive Care Society
https://www.readbyqxmd.com/read/29100920/4q25-microdeletion-encompassing-pitx2-a-patient-presenting-with-tetralogy-of-fallot-and-dental-anomalies-without-ocular-features
#14
P Vande Perre, C Zazo Seco, O Patat, L Bouneau, A Vigouroux, D Bourgeois, S El Hout, N Chassaing, P Calvas
Axenfeld-Rieger syndrome (ARS) is a heterogeneous clinical entity transmitted in an autosomal dominant manner. The main feature, Axenfeld-Rieger Anomaly (ARA), is a malformation of the anterior segment of the eye that can lead to glaucoma and impair vision. Extra-ocular defects have also been reported. Point mutations of FOXC1 and PITX2 are responsible for about 40% of the ARS cases. We describe the phenotype of a patient carrying a deletion encompassing the 4q25 locus containing PITX2 gene. This child presented with a congenital heart defect (Tetralogy of Fallot, TOF) and no signs of ARA...
October 31, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29049253/clinical-efficacy-analysis-of-ahmed-glaucoma-valve-implantation-in-neovascular-glaucoma-and-influencing-factors-a-strobe-compliant-article
#15
Ye He, Ying Tian, Weitao Song, Ting Su, Haibo Jiang, Xiaobo Xia
This study aimed to evaluate the efficacy of Ahmed glaucoma valve (AGV) implantation in treating neovascular glaucoma (NVG) and to analyze the factors influencing the surgical success rate.This is a retrospective review of 40 eyes of 40 NVG patients who underwent AGV implantation at Xiangya Hospital of Central South University, China, between January 2014 and December 2016. Pre- and postoperative intraocular pressure (IOP), visual acuity, surgical success rate, medications, and complications were observed. Surgical success criteria were defined as IOP ≤21 and >6 mm Hg with or without additional medications...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28989288/a-family-of-early-english-oculists-1600-1751-with-a-reappraisal-of-john-thomas-woolhouse-1664-1733-1734
#16
REVIEW
Christopher T Leffler, Stephen G Schwartz
INTRODUCTION: John Thomas Woolhouse (1666-1733/1734), who practiced in Paris, was part of a family with 5 generations of English oculists. Some historians have derided him as a "charlatan" and have criticized him for adhering to the old notion that a cataract was a membrane anterior to the lens. METHODS: We reviewed treatises and digital records related to Woolhouse and his family and the handwritten notes of his 1721 lecture series at the Royal Society of Medicine...
2017: Ophthalmology and Eye Diseases
https://www.readbyqxmd.com/read/28980502/marginal-structural-models-to-estimate-the-effects-of-time-varying-treatments-on-clustered-outcomes-in-the-presence-of-interference
#17
Jiwei He, Alisa Stephens-Shields, Marshall Joffe
Marginal structural models are a class of causal models useful for characterizing the effect of treatment in the presence of time-varying confounding. They are more widely used than structural nested models, partly because these models are easier to understand and to implement. We extend marginal structural models to situations with clustered observations with unit- and cluster-level treatment and introduce an appropriate inferential method. We consider how to formulate models with cluster-level and unit-level treatments...
January 1, 2017: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/28938016/a-feed-forward-regulation-of-endothelin-receptors-by-c-jun-in-human-non-pigmented-ciliary-epithelial-cells-and-retinal-ganglion-cells
#18
Junming Wang, Hai-Ying Ma, Raghu R Krishnamoorthy, Thomas Yorio, Shaoqing He
c-Jun, c-Jun N-terminal kinase(JNK) and endothelin B (ETB) receptor have been shown to contribute to the pathogenesis of glaucoma. Previously, we reported that an increase of c-Jun and CCAAT/enhancer binding protein β (C/EBPβ) immunohistostaining is associated with upregulation of the ETB receptor within the ganglion cell layer of rats with elevated intraocular pressure (IOP). In addition, both transcription factors regulate the expression of the ETB receptor in human non-pigmented ciliary epithelial cells (HNPE)...
2017: PloS One
https://www.readbyqxmd.com/read/28937523/cytomegalovirus-retinitis-associated-with-occlusive-vasculopathy-in-an-elderly-human-immunodeficiency-virus-negative-man
#19
Kareem Moussa, Thuy Doan, Jay M Stewart, Jessica Shantha, John Gonzales, Nisha Acharya, Emmett T Cunningham
PURPOSE: To present a case of cytomegalovirus (CMV) retinitis associated with occlusive vasculopathy presenting as sudden unilateral loss of vision in a human immunodeficiency virus-negative elderly man. METHODS: Clinical case report and literature review. RESULTS: An 84-year-old Chinese man with diabetes mellitus and primary open-angle glaucoma was seen in consultation by our uveitis service for evaluation of sudden vision loss in the right eye...
September 20, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28922308/large-retinal-pigment-epithelial-rip-associated-with-bullous-retinal-and-choroidal-detachment
#20
Jesse T McCann, Michael Engelbert
PURPOSE: To report a giant retinal pigment epithelium rip in a patient with a bullous retinal and choroidal detachment. METHODS: Case report with widefield imaging, fundus autofluorescence, and optical coherence tomography of the retina. RESULTS: This 62-year-old patient had a history of advanced glaucoma, trabeculectomy, blebitis, and endophthalmitis. He had cataract surgery 6 weeks before presentation. He was found to have a large bullous retinal and choroidal detachment with a large retinal pigment epithelium tear at the limit of the choroidal detachment...
October 2017: Retinal Cases & Brief Reports
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