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Contact lens keratitis

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https://www.readbyqxmd.com/read/28747368/fusarium-keratitis-in-germany
#1
Grit Walther, Serena Stasch, Kerstin Kaerger, Axel Hamprecht, Mathias Roth, Oliver A Cornely, Gerd Geerling, Colin R Mackenzie, Oliver Kurzai, Marie von Lilienfeld-Toal
Fusarium keratitis is a destructive eye infection that is difficult to treat and which results in poor outcome. In the tropical and subtropical areas the infection is relatively common and associated with trauma or chronic eye diseases. However, in recent years, an increased incidence has been reported in temperate climate regions. At the German National Reference Center, we observed a steady increase in case numbers since 2014. Here, we present the first German case series of eye infections with Fusarium spp...
July 26, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28708218/microbial-characteristics-of-posttraumatic-infective-keratitis
#2
Blanche X Lim, Victor T C Koh, Manotosh Ray
PURPOSE: To determine the demographics, risk factors, clinical and microbiological characteristics, and treatment outcome of posttraumatic infective keratitis. METHODS: Consecutive patients with posttraumatic infective keratitis presenting to the Ophthalmology Department of a tertiary referral hospital in Singapore between March 2012 and March 2016 were prospectively identified. A standardized data collection form was used to document patient demographics, microbiological diagnosis, antibiotic sensitivity, and pretreatment and posttreatment ocular characteristics...
July 8, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28676340/molecular-and-morphological-characterization-of-acanthamoeba-isolated-from-corneal-scrapes-and-contact-lens-wearers-in-argentina
#3
Rodolfo D Casero, Florencia Mongi, Laura Laconte, Fernando Rivero, Dario Sastre, Aníbal Teherán, Giovanny Herrera, Juan David Ramírez
In this study, we describe the frequency of Acanthamoeba keratitis (AK) in patients that assisted in the Ophthalmology Department and determine the species/genotypes of free living amoebas (FLA) isolates. FLA from Corneal scrapes (CS) and contact lens (CL) wearers were studied by morphological and molecular characterization. A database was constructed with sociodemographic, clinical findings and history of use of CL variables. During January 2000 and September 2016 patients with corneal pathology admitted to the Ophthalmology Service of the University Hospital in Córdoba city, Argentina were included in the study...
July 1, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28664704/human-infections-caused-by-free-living-amoebae
#4
REVIEW
Katarzyna Król-Turmińska, Alina Olender
[b]Abstract Introduction[/b]. Among free-living amoebae that are widely distributed in nature only four genera/species are known as agents of human infections:[i] Acanthamoeba spp., Naegleriafowleri, Balamuthia mandrillaris[/i] and[i] Sappiniapedata[/i]. These amoebae are not well adapted to parasitism, and could exist in the human environment without the need for a host. Infections due to these amoebae, despite low morbidity, are characterized by relatively high mortality rate and pose serious clinical problems...
May 11, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28656012/pathobiology-and-immunobiology-of-acanthamoeba-keratitis-insights-from-animal-models%C3%A2
#5
REVIEW
Sudha Neelam, Jerry Y Niederkorn
Acanthamoeba keratitis (AK) is a rare but sight-threatening disease caused by pathogenic species of Acanthamoeba. Despite its ubiquitous nature, the incidence of AK is relatively low compared to other forms of infectious keratitis. Although contact lens wear is a major risk factor, exposure to contaminated water and ocular trauma are also associated with AK. Once a patient develops AK the prognosis is very poor unless an aggressive treatment regimen is initiated early. Some of the intriguing features of AK are the lack of immunological memory, resistance of the dormant cyst form to treatment, differences between the pathogenic strains and soil isolates of Acanthamoeba and the unique role of the innate immune system in controlling this disease...
June 2017: Yale Journal of Biology and Medicine
https://www.readbyqxmd.com/read/28626819/comparison-of-bandage-contact-lens-removal-on-the-fourth-versus-seventh-postoperative-day-after-photorefractive-keratectomy-a-randomized-clinical-trial
#6
Mehrdad Mohammadpour, Delaram Shakoor, Hassan Hashemi, Mohamad Aghaie Meybodi, Fateme Rajabi, Pegah Hosseini
PURPOSE: To compare the outcomes of bandage contact lens (BCL) removal on the fourth versus seventh post-operative day following photorefractive keratectomy (PRK). METHODS: This study recruited eyes of patients who underwent PRK surgery. The patients were randomly assigned to 2 groups. In Group 1 BCL was removed on the 4th postoperative day, while in Group 2, BCL was removed on the 7th postoperative day. After BCL removal, patients were asked to express their pain score and eye discomfort...
June 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28603237/-contact-lens-related-fusarium-keratitis-a-case-report
#7
Silvia Amadasi, Giovanni Federico Pelliccioli, Paolo Colombini, Annalisa Bonomini, Claudio Farina, Filomena Pietrantonio, Palmino Pedroni
We aim to highlight the key factors for a good outcome of fungal keratitis. We describe a case of contact lens-related Fusarium keratitis in a young girl. After identification of Fusarium spp under direct microscopic examination and in culture, a prolonged treatment with topic natamycin 5% was started and administered for five months with restitutio ad integrum of the eye. Prompt microbiological diagnosis and a specific and prolonged treatment are essential for correct management of Fusarium keratitis.
June 1, 2017: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28575976/thermosensitive-hydrogel-as-an-in-situ-gelling-antimicrobial-ocular-dressing
#8
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/28538612/scleral-contact-lenses-in-an-academic-oculoplastics-clinic-epidemiology-and-emerging-considerations
#9
Harinder S Chahal, Marcela Estrada, Christine W Sindt, Jacob A Boehme, Mark A Greiner, Jeffrey A Nerad, Keith D Carter, Richard C Allen, Erin M Shriver
PURPOSE: To describe the role and efficacy of scleral contact lenses (SCLs) in the treatment of progressive keratopathy in patients who have undergone periocular surgical procedures, to investigate the financial impact of these surgical interventions, and to demonstrate the role of oculoplastic surgery in improving scleral contact lens fit. METHODS: A retrospective medical record review was performed to identify patients who both received SCLs and were examined by the oculoplastics service at the University of Iowa between January 1990 and December 2015...
May 22, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28520596/fungal-keratitis-associated-with-airborne-organic-debris-and-soft-contacts-lenses-case-reports-and-review-of-the-literature
#10
Michael J Hodkin, Ryan C Gustus
OBJECTIVES: To report two cases of fungal keratitis in soft contact lens wearers who were exposed to environmental mold. METHODS: Case reports, with review of the relevant literature. RESULTS: Two otherwise healthy middle-aged women who were soft contact lens wearers developed fungal keratitis about 1 week after heavy exposure to environmental mold. Culture results showed Aspergillus from one patient and the unusual combination of Trichoderma and Penicillium from the other...
May 16, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28514244/the-safety-of-soft-contact-lenses-in-children
#11
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/28489721/tear-cytokine-levels-in-contact-lens-wearers-with-acanthamoeba-keratitis
#12
Nicole Carnt, Vicente M Montanez, Grazyna Galatowicz, Neyme Veli, Virginia Calder
PURPOSE: To determine differences in key tear film cytokines between mild and severe cases of acanthamoeba keratitis (AK) and control contact lens (CL) wearers. METHODS: This was a prospective study of CL wearers with AK attending Moorfields Eye Hospital and control CL wearers from the Institute of Optometry, London. Basal tear specimens were collected by 10-μL capillary tubes (BLAUBRAND intraMark, Wertheim, Germany), and tear protein levels were measured with a multiplex magnetic bead array (Luminex 100; Luminex Corporation, Austin, TX) for cytokines interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-17A, IL-17E, IL-17F, IL-22, and interferon gamma and with enzyme-linked immunosorbent assay (Abcam, Cambridge, United Kingdom) for CXCL2...
July 2017: Cornea
https://www.readbyqxmd.com/read/28486311/free-living-amoebae-keratitis
#13
Antonio Pinna, Tiziana Porcu, Francesco Boscia, Antonella Cano, Giuseppe Erre, Antonella Mattana
PURPOSE: To describe the diagnostic and clinical features and treatment results in 43 consecutive patients with microbiologically proven free-living amoebae (FLA) keratitis. METHODS: In this hospital-based, prospective case series, corneal scrapings from 43 patients with presumed amoebic keratitis were plated on nonnutrient agar. Amoebic isolates were identified morphologically and by the polymerase chain reaction. All patients with culture-proven FLA keratitis were treated with polyhexamethylene biguanide (PHMB) 0...
July 2017: Cornea
https://www.readbyqxmd.com/read/28450791/a-case-report-of-central-toxic-keratopathy-in-a-patient-post-transprk-followed-by-corneal-collagen-cross-linking
#14
Nicholas Davey, Ioannis M Aslanides, Vasilis Selimis
PURPOSE: The purpose of this article is to report a case of central toxic keratopathy in a patient post transepithelial photorefractive keratectomy (TransPRK), followed immediately by corneal collagen cross-linking. METHODS: This article describes the case of a 26-year-old male after bilateral aberration-free, TransPRK laser (Schwind Amaris 750S). The procedure was performed for compound myopic astigmatism in November 2015, followed immediately by accelerated corneal collagen cross-linking for early keratoconus...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28410356/water-exposure-is-a-common-risk-behavior-among-soft-and-gas-permeable-contact-lens-wearers
#15
Aaron B Zimmerman, Kathryn Richdale, Gladys Lynn Mitchell, Beth T Kinoshita, Dawn Y Lam, Heidi Wagner, Luigina Sorbara, Robin L Chalmers, Sarah A Collier, Jennifer R Cope, Maya M Rao, Michael J Beach, Jonathan S Yoder
PURPOSE: To understand soft contact lens (SCL) and gas-permeable (GP) lens wearers' behaviors and knowledge regarding exposure of lenses to water. METHODS: The Contact Lens Risk Survey (CLRS) and health behavior questions were completed online by a convenience sample of 1056 SCL and 85 GP lens wearers aged 20 to 76 years. Participants were asked about exposing their lenses to water and their understanding of risks associated with these behaviors. Chi-square analyses examined relationships between patient behaviors and perceptions...
August 2017: Cornea
https://www.readbyqxmd.com/read/28380096/visual-rehabilitation-using-mini-scleral-contact-lenses-after-penetrating-keratoplasty
#16
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/28376553/fungal-keratitis-a-six-year-review-at-a-tertiary-referral-centre
#17
K C Iselin, P B Baenninger, A Schmittinger-Zirm, M A Thiel, C Kaufmann
Background This review reports the epidemiology, laboratory results, treatment regimens and costs of fungal keratitis at a tertiary referral center in Lucerne, Switzerland. Patients and Methods Culture-proven fungal infections between January 2010 and December 2015 were reviewed retrospectively. Results Seventeen patients with a mean age of 52 years were identified. Contact lens wear was the most important risk factor (n = 11) (65 % of all cases), with filamentous fungi being identified as the most common fungus type (n = 10) (91 % of all cases of contact lens-associated fungal keratitis)...
April 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28359825/bilateral-simultaneous-infective-keratitis
#18
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...
August 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28350622/keratitis-due-to-achromobacter-xylosoxidans-in-a-contact-lens-user
#19
Cristina Almenara Michelena, María Ángeles Del Buey, Francisco Javier Ascaso, Jose Ángel Cristóbal
OBJECTIVES: Ocular infections due to Achromobacter xylosoxidans are extremely uncommon; their diagnosis is a challenge and the optimal treatment remains controversial. We present a case of A. xylosoxidans in a contact lens user and a review of the literature to facilitate diagnostic suspicion and empirical therapeutic management. METHODS: Review of the literature in PubMed and MEDLINE. We also document a case diagnosed in our department in January 2016. SETTING: Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain...
March 27, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28336675/evolving-risk-factors-and-antibiotic-sensitivity-patterns-for-microbial-keratitis-at-a-large-county-hospital
#20
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
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