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Microbial keratitis

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https://www.readbyqxmd.com/read/28644238/prevention-and-management-of-descemet-membrane-endothelial-keratoplasty-complications
#1
Ruth Quilendrino, Marina Rodriguez-Calvo de Mora, Lamis Baydoun, Lisanne Ham, Korine van Dijk, Isabel Dapena, Silke Oellerich, Gerrit R J Melles
PURPOSE: To describe Descemet membrane endothelial keratoplasty (DMEK) complications and strategies for their prevention and management. METHODS: Five hundred consecutive eyes with DMEK of 393 patients were reviewed in this retrospective study for intraoperative and postoperative complications up to 2 years and for corresponding management. RESULTS: Intraoperative challenges (difficult graft unfolding/positioning, high vitreous pressure, iris root hemorrhage, and Descemet membrane remnants) were encountered in 81 eyes (16...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28575976/thermosensitive-hydrogel-as-an-in-situ-gelling-antimicrobial-ocular-dressing
#2
S Mohammed, Gurpreet Chouhan, Olachi Anuforom, Megan Cooke, Anna Walsh, Peter Morgan-Warren, Mike Jenkins, Felicity de Cogan
Microbial keratitis is a severe ocular condition and one of the most prevalent causes of corneal scarring and associated blindness worldwide. Risk factors include contact lens use, ocular trauma, ocular surface disease and immunosuppression. Initial clinical management mandates intensive (hourly or more frequent) topical administration of broad spectrum antimicrobial therapy for at least 48h, which may require hospital admission, followed by tailored therapy based on microbiological investigation and the institution of strategies to reduce inflammation and promote healing...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28573109/persistence-of-innate-immune-pathways-in-late-stage-human-bacterial-and-fungal-keratitis-results-from-a-comparative-transcriptome-analysis
#3
Jaya D Chidambaram, Shichina Kannambath, Palepu Srikanthi, Manisha Shah, Prajna Lalitha, Shanmugam Elakkiya, Julien Bauer, Namperumalsamy V Prajna, Martin J Holland, Matthew J Burton
Microbial keratitis (MK) is a major cause of blindness worldwide. Despite adequate antimicrobial treatment, tissue damage can ensue. We compared the human corneal transcriptional profile in late stage MK to normal corneal tissue to identify pathways involved in pathogenesis. Total RNA from MK tissue and normal cadaver corneas was used to determine transcriptome profiles with Illumina HumanHT-12 v4 beadchips. We performed differential expression and network analysis of genes in bacterial keratitis (BK) and fungal keratitis (FK) compared with control (C) samples...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28546688/collagen-cross-linking-for-microbial-keratitis
#4
REVIEW
Prashant Garg, Sujata Das, Aravind Roy
Collagen cross-linking is gaining popularity not only for arresting the progression of keratoconus but also other indications including management of corneal infections. In this review article, we analyzed the published literature to understand the level of evidence for its use in corneal ulcer. Photoactivated riboflavin and ultraviolet A light are known to possess antimicrobial properties. The treatment also induces formation of inter- and intra-fibrillar bonds, thereby making the corneal collagen resistant to the action of proteases arresting stromal melt...
January 2017: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/28534320/infectious-keratitis-and-orthokeratology-lens-use-a-systematic-review
#5
REVIEW
Ka Wai Kam, Wing Yung, Gabriel Ka Hin Li, Li Jia Chen, Alvin L Young
PURPOSE: Myopia is a prevalent condition among Asians. Orthokeratology lens has gained popularity as a method of myopia control. This systematic review is to summarize the clinical profile of infectious keratitis in association with orthokeratology lens wear. METHODS: We searched in the PubMed and EMBASE for articles adopting the search strategy "(orthokeratology lens OR orthokeratology) AND (bacterial eye infection OR keratitis OR cornea ulcer OR microbial keratitis OR bacterial keratitis)", from the start date of the databases to August 23, 2016...
May 22, 2017: Infection
https://www.readbyqxmd.com/read/28532931/infectious-keratitis-after-laser-vision-correction-incidence-and-risk-factors
#6
Julie M Schallhorn, Steven C Schallhorn, Keith Hettinger, Stephen Hannan
PURPOSE: To describe the incidence and risk factors associated with microbial keratitis in a large population of laser vision correction (LVC) patients. SETTING: Optical Express centers, Glasgow, United Kingdom. DESIGN: Retrospective case series. METHODS: Records were searched to identify all cases of presumed microbial keratitis after LVC between January 1, 2008, and April 1, 2015. Consecutive patients having primary or enhancement LVC during that time served as controls...
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28514244/the-safety-of-soft-contact-lenses-in-children
#7
Mark A Bullimore
PURPOSE: There is increasing interest in fitting children with soft contact lenses. This review collates data from a range of studies to estimate the incidence of complications, specifically corneal infiltrative events and microbial keratitis, in patients under the age of 18 years. METHODS: Peer-review papers were identified using PubMed and the Web of Science. A broad range of studies are summarized including large-scale epidemiological studies of contact lens-related complications, hospital-based case series, long- and short-term prospective studies, and multicenter retrospective studies...
June 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28506643/epithelial-basement-membrane-injury-and-regeneration-modulates-corneal-fibrosis-after-pseudomonas-corneal-ulcers-in-rabbits
#8
Gustavo K Marino, Marcony R Santhiago, Abirami Santhanam, Luciana Lassance, Shanmugapriya Thangavadivel, Carla S Medeiros, Karthikeyan Bose, Kwai Ping Tam, Steven E Wilson
The purpose of this study was to investigate whether myofibroblast-related fibrosis (scarring) after microbial keratitis was modulated by the epithelial basement membrane (EBM) injury and regeneration. Rabbits were infected with Pseudomonas aeruginosa after epithelial scrape injury and the resultant severe keratitis was treated with topical tobramycin. Corneas were analyzed from one to four months after keratitis with slit lamp photos, immunohistochemistry for alpha-smooth muscle actin (α-SMA) and monocyte lineage marker CD11b, and transmission electron microscopy...
May 13, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28484310/a-dot-hybridization-assay-for-the-diagnosis-of-bacterial-keratitis
#9
Po-Chiung Fang, Chun-Chih Chien, Hun-Ju Yu, Ren-Wen Ho, Shin-Ling Tseng, Yu-Hsuan Lai, Ming-Tse Kuo
PURPOSE: To evaluate a bacterial dot hybridization (BDH) assay for the diagnosis of bacterial keratitis (BK). METHODS: Sixty-one qualified corneal scrapings from 61 patients with suspected microbial keratitis were collected consecutively and prospectively. Among the 61 patients, 16 cases were BK and 45 cases were non-BK, including fungal keratitis, viral keratitis, parasitic keratitis, and non-microbial keratitis. Molecular diagnosis of BK in these corneal scrapes was performed using the BDH assay with three universal bacterial probes (PB1, PB2, and PB3) and three genus-specific probes (Aci, Klb, and Psu) to detect Acinetobacter, Klebsiella, and Pseudomonas, respectively...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28452995/twelve-year-analysis-of-microbial-keratitis-trends-at-a-uk-tertiary-hospital
#10
S Z Tan, A Walkden, L Au, C Fullwood, A Hamilton, A Qamruddin, M Armstrong, A K Brahma, F Carley
PurposeTo investigate the frequencies, trends, and in vitro drug susceptibilities of the causative pathogens in microbial keratitis in Manchester Royal Eye Hospital.Patients and methodsCorneal scrape results recorded by the microbiology service between 2004 and 2015 were extracted from an established database. A total of 4229 corneal scrape specimens were identified from an established database. First-line antibiotic treatment in our centre during the study period was ofloxacin and second line was cefuroxime and gentamicin...
April 28, 2017: Eye
https://www.readbyqxmd.com/read/28445703/sensitivity-and-specificity-of-laser-scanning-in-vivo-confocal-microscopy-for-filamentous-fungal-keratitis-role-of-observer-experience
#11
Ahmad Kheirkhah, Zeba A Syed, Vannarut Satitpitakul, Sunali Goyal, Rodrigo Müller, Elmer Y Tu, Reza Dana
PURPOSE: To determine sensitivity and specificity of laser-scanning in vivo confocal microscopy (LS-IVCM) for detection of filamentous fungi in patients with microbial keratitis and to evaluate the effect of observer's imaging experience on these parameters. DESIGN: Retrospective, reliability study METHODS: This study included 21 patients with filamentous fungal keratitis and 24 patients with bacterial keratitis (as controls). The etiology of infection was confirmed based on the response to specific therapy regardless of culture results...
April 23, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28380096/visual-rehabilitation-using-mini-scleral-contact-lenses-after-penetrating-keratoplasty
#12
Guilherme Andrade do Nascimento Rocha, Patrícia Oliveira Braga Miziara, Ana Clara Vieira de Castro, Arthur Andrade do Nascimento Rocha
Purpose: To report the visual rehabilitation outcomes and complications of patients fitted with mini-scleral rigid gas-permeable (RGP) contact lenses (mini-SCLs) after penetrating keratoplasty. Methods: We retrospectively reviewed 27 eyes (21 patients) that were fitted with mini-SCLs between October 2013 and December 2014. We analyzed demographic data, previous corneal disorders, visual outcomes, interval from keratoplasty to contact lens fitting, topographic and specular microscope data, fitted contact lens parameters, and complications...
January 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28359825/bilateral-simultaneous-infective-keratitis
#13
Lai Hiu On Annie, Manotosh Ray
AIM: To analyze the demographics, risk factors, clinical and microbiological characteristics of cases of bilateral simultaneous infective keratitis. METHODS: In this retrospective case series, patients with clinical evidence of bilateral simultaneous infective keratitis were identified from January 1, 2011 to August 31, 2016. Demographics, risk factors, clinical and microbiological characteristics, and treatment outcomes were analyzed. RESULTS: Five patients (ten eyes) with bilateral simultaneous infective keratitis were identified...
March 27, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28347669/microbial-keratitis-after-penetrating-keratoplasty
#14
Jen-Pin Sun, Wei-Li Chen, Jehn-Yu Huang, Yu-Chih Hou, I-Jong Wang, Fung-Rong Hu
PURPOSE: To report the incidence, microbiological profile, graft survival, and determining factors of microbial keratitis after penetrating keratoplasty (PK). DESIGN: Observational case series. METHODS: The study involved 51 patients (52 eyes) who were treated at a single tertiary referral center during a 10-year period. Retrospective chart review included medical records of all patients diagnosed with microbial keratitis after penetrating keratoplasty at the National Taiwan University Hospital between January 2000 and December 2009...
March 25, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28336675/evolving-risk-factors-and-antibiotic-sensitivity-patterns-for-microbial-keratitis-at-a-large-county-hospital
#15
Haoxing Jin, Walter T Parker, Nathan W Law, Cameron L Clarke, Jordan D Gisseman, Stephen C Pflugfelder, Li Wang, Zaina N Al-Mohtaseb
Purpose: To identify the risk factors, causative organisms, antimicrobial susceptibility and outcomes of microbial keratitis in a large county hospital in Houston, Texas. Design: Case series. METHODS: Setting: A large county hospital in Houston, Texas. Study Population: Patients with known diagnosis of microbial keratitis from January 2011 to May 2015. Observation Procedure: Retrospective chart review. Main Outcomes: Epidemiology, risk factors, outcomes and antibiotic susceptibility of microbial keratitis...
March 23, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28330899/il-24-promotes-pseudomonas-aeruginosa-keratitis-in-c57bl-6-mouse-corneas
#16
Bing X Ross, Nan Gao, Xinhan Cui, Theodore J Standiford, Jianjiang Xu, Fu-Shin X Yu
The aim of this study was to elucidate the expression and functions of IL-24 in C57BL/6 mouse corneas in response to Pseudomonas aeruginosa infection. Among IL-20R cytokines, only IL-24 was induced at both mRNA and protein levels by infection at early time points. The upregulation of IL-24 was dampened by flagellin pretreatment, which protects the corneas from microbial infection. Time course studies revealed bimodal early and later peaks of IL-24 expression, a pattern shared with suppressor of cytokine signaling (SOCS)3 but not IL-1β or IL-6...
May 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28325674/-risk-factors-for-contact-lens-related-microbial-keratitis-a-multicenter-case-control-study
#17
P H Becmeur, F Abry, T Bourcier, N Meyer, A Sauer
PURPOSE: Currently, the most feared complication by ophthalmologists of contact lens (CL) wear is microbial keratitis (MK), even though its incidence remains low. It is also a significant financial burden for society. This study aimed to identify the risk factors for CL-related MK especially with regard to hygiene and pattern of use, in a large, prospective, multicenter, case-control study. METHODS: A multicenter retrospective case-control study was designed. The CL-related MK subpopulation (case) was compared with healthy CL wearers (control) using a 52-item anonymous questionnaire designed to determine subject demographics, lens wear history, lens type and disinfection solution, fitting, patient education, hygiene and maintenance of contact lenses, and patient history...
March 18, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28317680/risk-for-microbial-keratitis-comparative-metaanalysis-of-contact-lens-wearers-and-post-laser-in-situ-keratomileusis-patients
#18
Jordan Masters, Mehmet Kocak, Aaron Waite
PURPOSE: To compare the risk for microbial keratitis in contact lens wearers stratified by wear schedule with the risk after laser in situ keratomileusis (LASIK). SETTING: Hamilton Eye Institute and Department of Ophthalmology, University of Tennessee Health Science Center, Memphis, Tennessee, USA. DESIGN: Comparative metaanalysis and literature review. METHODS: An extensive literature search was performed in the PubMed database between December 2014 and July 2015...
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28298316/paediatric-infectious-keratitis-a-case-series-of-107-children-presenting-to-a-tertiary-referral-centre
#19
Julia Dutra Rossetto, Kara M Cavuoto, Carla J Osigian, Ta Chen Peter Chang, Darlene Miller, Hilda Capo, Oriel Spierer
BACKGROUND/AIMS: Corneal ulcers can result in severe visual impairment in children. The recent trends of paediatric microbial ulcerative keratitis in the USA are unknown. The purpose of this study is to report the risk factors, microbiological profile and treatment outcomes of paediatric microbial keratitis in South Florida. METHODS: A university-based tertiary eye care centre retrospective case series between 1992 and 2015. Medical records of 107 paediatric patients (age <18 years) with the diagnosis of microbial ulcerative keratitis were analysed...
March 15, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28295595/optometry-australia-scope-of-practice-survey-2015
#20
Patricia M Kiely, Skye Cappuccio, Ellen McIntyre
BACKGROUND: This paper presents results from the inaugural Scope of Practice Survey of Optometry Australia members conducted in October 2015. The survey gathered information related to confidence in detecting and diagnosing key ocular conditions, grading diabetic retinopathy, prescribing scheduled medicines, access to equipment, confidence using equipment, incidence of patients requiring therapeutic management, referral practices and services provided. METHODS: The survey was developed, piloted, modified and administered to members of Optometry Australia (excluding student and retired members), who had a current email address...
May 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
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