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Acanthamoeba
A genus of free-living soil amoebae that produces no flagellate stage. Its organisms are pathogens for several infections in humans and have been found in the eye, bone, brain, and respiratory tract.
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- voir aussi au terme générique : [Descripteurs (mots clés)] Acanthopodina
- voir aussi au terme spécifique : [Descripteurs (mots clés)] Acanthamoeba castellanii
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American Academy of Optometry Microbial Keratitis Think Tank / Loretta B. Szczotka-Flynn in OVS : Optometry & Vision Science, vol. 98, 03 (Mars 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 03 (Mars 2021)
Titre : American Academy of Optometry Microbial Keratitis Think Tank Type de document : article de périodique Auteurs : Loretta B. Szczotka-Flynn ; Joseph P. Shovlin ; Cristina M. Schnider ; Barbara E. Caffery ; Eduardo C. Alfonso ; Nicole A. Carnt ; Robin L. Chalmers ; Sarah Collier ; Charlotte E. Joslin ; Abby R. Kroken ; Carol Lakkis ; Eric Pearlman ; Oliver D. Schein ; Fiona Stapleton ; Elmer Tu ; Mark D.P. Willcox Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]:L:Lentilles de contact:Lentilles de contact / effets indésirables
[Thésaurus Mesh]Acanthamoeba
[Thésaurus Mesh]Enfant
[Thésaurus Mesh]Kératite
[Thésaurus Mesh]Lentilles de contact
[Thésaurus HELB]:Optique:nettoyage des lentilles de contact
[Thésaurus HELB]:Optique:port de lentilles de contactMots-clés : kératite microbienne Résumé : SIGNIFICANCE: Think Tank 2019 affirmed that the rate of infection associated with contact lenses has not changed
in several decades. Also, there is a trend toward more serious infections associated with Acanthamoeba and fungi.
The growing use of contact lenses in children demands our attention with surveillance and case-control studies.
PURPOSE: The American Academy of Optometry (AAO) gathered researchers and key opinion leaders from around
the world to discuss contact lens–associated microbial keratitis at the 2019 AAO Annual Meeting.
METHODS: Experts presented within four sessions. Session 1 covered the epidemiology of microbial keratitis,
pathogenesis of Pseudomonas aeruginosa, and the role of lens care systems and storage cases in corneal disease.
Session 2 covered nonbacterial forms of keratitis in contact lens wearers. Session 3 covered future needs, challenges, and research questions in relation to microbial keratitis in youth and myopia control, microbiome, antimicrobial surfaces, and genetic susceptibility. Session 4 covered compliance and communication imperatives.
RESULTS: The absolute rate of microbial keratitis has remained very consistent for three decades despite new
technologies, and extended wear significantly increases the risk. Improved oxygen delivery afforded by silicone hydrogel lenses has not impacted the rates, and although the introduction of daily disposable lenses has minimized
the risk of severe disease, there is no consistent evidence that they have altered the overall rate of microbial keratitis. Overnight orthokeratology lenses may increase the risk of microbial keratitis, especially secondary to
Acanthamoeba, in children. Compliance remains a concern and a significant risk factor for disease. New insights
into host microbiome and genetic susceptibility may uncover new theories. More studies such as case-control designs suited for rare diseases and registries are needed.
CONCLUSIONS: The first annual AAO Think Tank acknowledged that the risk of microbial keratitis has not decreased over decades, despite innovation. Important questions and research directions remain.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Atteintes oculaires dues à des infections parasitaires / Aminata Ouedraogo
Titre : Atteintes oculaires dues à des infections parasitaires Type de document : TFE Auteurs : Aminata Ouedraogo, Auteur ; Simons, M, Promoteur Année de publication : 2005 Descripteurs (mots clés) : [Thésaurus Mesh]Acanthamoeba
[Thésaurus Mesh]Maladies de l'oeil
[Thésaurus Mesh]Maladies parasitaires
[Thésaurus Mesh]Onchocercose oculaire
[Thésaurus Mesh]Toxocarose
[Thésaurus Mesh]Toxoplasmose oculairePromoteur : Simons, M Domaine TFE : Baccalauréat en Optique-optométrie Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= Exemplaires
Cote Support Localisation Section Disponibilité OPT/2005/05 TFE Erasme - TFE Optique Disponible Case Series: Unusual Presentation of Acanthamoeba Coinfection in the Cornea / Yu-Hsun Chuang in OVS : Optometry & Vision Science, vol. 99, 07 (Juillet 2022)
[article]
in OVS : Optometry & Vision Science > vol. 99, 07 (Juillet 2022)
Titre : Case Series: Unusual Presentation of Acanthamoeba Coinfection in the Cornea Type de document : article de périodique Auteurs : Yu-Hsun Chuang ; Ying-Chi Wang ; Chu-Yu Yen ; Chih-Chung Lin ; Chun-Chen Chen Année de publication : 2022 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Acanthamoeba
[Thésaurus Mesh]Cornée
[Thésaurus Mesh]Lentilles de contact
[Thésaurus HELB]:Optique:orthokératologieMots-clés : périnévrite épithélite Résumé : SIGNIFICANCE: The cases illustrate Acanthamoeba coinfection with Pseudomonas aeruginosa or microsporidia in the cornea. PURPOSE: This case series aimed to alert clinicians toward considering Acanthamoeba coinfection in the cornea when unusual presentation such as perineuritis or epitheliitis was observed in clinical images. Increased suspicion of Acanthamoeba coinfection may facilitate early diagnosis and prompt management, eventually leading to good vision outcomes. CASE SERIES: An 11-year-old boy wearing orthokeratology lens for myopia control complained of pain in the right eye for 1 week. A paracentral corneal ulcer with perineuritis was observed. Culture from corneal tissue revealed P. aeruginosa, and an in vivo confocal microscopic examination showed highly reflective and oval-shaped structures indicating Acanthamoeba coinfection. Corneal lesions gradually improved under 0.02% polyhexamethylene biguanidine, 0.1% propamidine isethionate, and 0.3% ciprofloxacin. At 1 year, the final best-corrected visual acuity was 20/25 with residual paracentral corneal opacity. Another 20-year-old man complained of pain in the right eye for 2 weeks. Multiple raised corneal lesions associated with epitheliitis were found. Moreover, 1% acid-fast staining showed oval-shaped spores, and microsporidia infection was inferred. In addition, polymerase chain reaction results obtained after subjecting the patient to corneal debridement revealed positivity for Acanthamoeba. Polyhexamethylene biguanidine (0.02%) and 0.5% moxifloxacin were prescribed, and the lesions subsided. At a 2-year follow-up, the final best-corrected visual acuity was 20/25. CONCLUSIONS: Perineuritis in orthokeratology lens wearers and epitheliitis without any predisposing factor are unusual presentations of Acanthamoeba coinfection in the cornea. These corneal findings should arouse the suspicion of coinfection and enable the clinicians to conduct the appropriate workup and initiate adequate treatment. This case series demonstrated that early diagnosis and prompt treatment can improve visual prognosis. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire