Titre : Barrière hémato-encéphalique

Barrière hémato-encéphalique : Questions médicales fréquentes

Termes MeSH sélectionnés :

Visual Acuity
{ "@context": "https://schema.org", "@graph": [ { "@type": "MedicalWebPage", "name": "Barrière hémato-encéphalique : Questions médicales les plus fréquentes", "headline": "Barrière hémato-encéphalique : Comprendre les symptômes, diagnostics et traitements", "description": "Guide complet et accessible sur les Barrière hémato-encéphalique : explications, diagnostics, traitements et prévention. Information médicale validée destinée aux patients.", "datePublished": "2024-02-05", "dateModified": "2025-04-30", "inLanguage": "fr", "medicalAudience": [ { "@type": "MedicalAudience", "name": "Grand public", "audienceType": "Patient", "healthCondition": { "@type": "MedicalCondition", "name": "Barrière hémato-encéphalique" }, "suggestedMinAge": 18, "suggestedGender": "unisex" }, { "@type": "MedicalAudience", "name": "Médecins", "audienceType": "Physician", "geographicArea": { "@type": "AdministrativeArea", "name": "France" } }, { "@type": "MedicalAudience", "name": "Chercheurs", "audienceType": "Researcher", "geographicArea": { "@type": "AdministrativeArea", "name": "International" } } ], "reviewedBy": { "@type": "Person", "name": "Dr Olivier Menir", "jobTitle": "Expert en Médecine", "description": "Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale", "url": "/static/pages/docteur-olivier-menir.html", "alumniOf": { "@type": "EducationalOrganization", "name": "Université Paris Descartes" } }, "isPartOf": { "@type": "MedicalWebPage", "name": "Encéphale", "url": "https://questionsmedicales.fr/mesh/D001921", "about": { "@type": "MedicalCondition", "name": "Encéphale", "code": { "@type": "MedicalCode", "code": "D001921", "codingSystem": "MeSH" }, "identifier": { "@type": "PropertyValue", "propertyID": "MeSH Tree", "value": "A08.186.211" } } }, "about": { "@type": "MedicalCondition", "name": "Barrière hémato-encéphalique", "alternateName": "Blood-Brain Barrier", "code": { "@type": "MedicalCode", "code": "D001812", "codingSystem": "MeSH" } }, "author": [ { "@type": "Person", "name": "William A Banks", "url": "https://questionsmedicales.fr/author/William%20A%20Banks", "affiliation": { "@type": "Organization", "name": "Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA, United States." } }, { "@type": "Person", "name": "Elizabeth M Rhea", "url": "https://questionsmedicales.fr/author/Elizabeth%20M%20Rhea", "affiliation": { "@type": "Organization", "name": "Geriatric Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, United States; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA, United States. Electronic address: meredime@uw.edu." } }, { "@type": "Person", "name": "Chenghua Gu", "url": "https://questionsmedicales.fr/author/Chenghua%20Gu", "affiliation": { "@type": "Organization", "name": "Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA. Electronic address: chenghua_gu@hms.harvard.edu." } }, { "@type": "Person", "name": "Michelle A Erickson", "url": "https://questionsmedicales.fr/author/Michelle%20A%20Erickson", "affiliation": { "@type": "Organization", "name": "Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA." } }, { "@type": "Person", "name": "Steffen E Storck", "url": "https://questionsmedicales.fr/author/Steffen%20E%20Storck", "affiliation": { "@type": "Organization", "name": "Institute for Pathobiochemistry, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany." } } ], "citation": [ { "@type": "ScholarlyArticle", "name": "The prognostic implication of visual acuity at the time of uveal melanoma diagnosis.", "datePublished": "2022-11-24", "url": "https://questionsmedicales.fr/article/36434284", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1038/s41433-022-02316-8" } }, { "@type": "ScholarlyArticle", "name": "Association of macular OCT and OCTA parameters with visual acuity in glaucoma.", "datePublished": "2022-09-09", "url": "https://questionsmedicales.fr/article/36126109", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1136/bjo-2022-321460" } }, { "@type": "ScholarlyArticle", "name": "Successful Aging in Assisted Living: The Importance of Near Visual Acuity.", "datePublished": "2022-09-01", "url": "https://questionsmedicales.fr/article/36007216", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3928/00989134-20220805-01" } }, { "@type": "ScholarlyArticle", "name": "Characterization of vision in pediatric retinoblastoma survivors beyond visual acuity.", "datePublished": "2023-07-12", "url": "https://questionsmedicales.fr/article/37442536", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.jaapos.2023.06.003" } }, { "@type": "ScholarlyArticle", "name": "The speed acuity test as a diagnostic aid in cerebral visual impairment.", "datePublished": "2022-06-22", "url": "https://questionsmedicales.fr/article/35732797", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1038/s41598-022-14673-1" } } ], "breadcrumb": { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "questionsmedicales.fr", "item": "https://questionsmedicales.fr" }, { "@type": "ListItem", "position": 2, "name": "Système nerveux", "item": "https://questionsmedicales.fr/mesh/D009420" }, { "@type": "ListItem", "position": 3, "name": "Système nerveux central", "item": "https://questionsmedicales.fr/mesh/D002490" }, { "@type": "ListItem", "position": 4, "name": "Encéphale", "item": "https://questionsmedicales.fr/mesh/D001921" }, { "@type": "ListItem", "position": 5, "name": "Barrière hémato-encéphalique", "item": "https://questionsmedicales.fr/mesh/D001812" } ] } }, { "@type": "MedicalWebPage", "name": "Article complet : Barrière hémato-encéphalique - Questions et réponses", "headline": "Questions et réponses médicales fréquentes sur Barrière hémato-encéphalique", "description": "Une compilation de questions et réponses structurées, validées par des experts médicaux.", "datePublished": "2025-05-17", "inLanguage": "fr", "hasPart": [ { "@type": "MedicalWebPage", "name": "Diagnostic", "headline": "Diagnostic sur Barrière hémato-encéphalique", "description": "Comment évaluer l'intégrité de la barrière hémato-encéphalique ?\nQuels signes indiquent une défaillance de la barrière ?\nQuels tests sanguins sont utiles pour le diagnostic ?\nLa biopsie est-elle nécessaire pour le diagnostic ?\nQuels examens neurologiques sont recommandés ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Barrière hémato-encéphalique", "description": "Quels symptômes sont associés à une barrière défaillante ?\nLa confusion mentale est-elle un symptôme ?\nDes convulsions peuvent-elles se produire ?\nQuels symptômes neurologiques sont préoccupants ?\nLa fatigue chronique est-elle liée à cette condition ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Barrière hémato-encéphalique", "description": "Comment prévenir les troubles de la barrière hémato-encéphalique ?\nLes vaccinations sont-elles importantes ?\nLe contrôle de la pression artérielle aide-t-il ?\nL'alimentation joue-t-elle un rôle ?\nLe stress peut-il affecter la barrière ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Barrière hémato-encéphalique", "description": "Quels traitements sont disponibles pour les troubles de la barrière ?\nLa chirurgie est-elle une option de traitement ?\nLes corticostéroïdes sont-ils utilisés ?\nY a-t-il des traitements expérimentaux ?\nComment la rééducation peut-elle aider ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Barrière hémato-encéphalique", "description": "Quelles complications peuvent survenir ?\nLes AVC sont-ils une complication possible ?\nDes troubles cognitifs peuvent-ils se développer ?\nLa démence est-elle une complication ?\nLes troubles psychiatriques sont-ils possibles ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Barrière hémato-encéphalique", "description": "Quels facteurs augmentent le risque de défaillance ?\nLe diabète est-il un facteur de risque ?\nL'alcoolisme influence-t-il la barrière ?\nLe tabagisme est-il un risque ?\nLes infections virales sont-elles préoccupantes ?", "url": "https://questionsmedicales.fr/mesh/D001812?mesh_terms=Visual+Acuity&page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment évaluer l'intégrité de la barrière hémato-encéphalique ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Des tests d'imagerie comme l'IRM et des analyses de liquide céphalorachidien sont utilisés." } }, { "@type": "Question", "name": "Quels signes indiquent une défaillance de la barrière ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes neurologiques, des infections ou des inflammations peuvent indiquer une défaillance." } }, { "@type": "Question", "name": "Quels tests sanguins sont utiles pour le diagnostic ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des tests pour détecter des anticorps ou des marqueurs inflammatoires peuvent être effectués." } }, { "@type": "Question", "name": "La biopsie est-elle nécessaire pour le diagnostic ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Rarement, sauf dans des cas spécifiques comme les tumeurs cérébrales ou infections." } }, { "@type": "Question", "name": "Quels examens neurologiques sont recommandés ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des examens neurologiques complets, y compris des tests de réflexes et de coordination." } }, { "@type": "Question", "name": "Quels symptômes sont associés à une barrière défaillante ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des maux de tête, des troubles de la vision, et des changements de comportement peuvent survenir." } }, { "@type": "Question", "name": "La confusion mentale est-elle un symptôme ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, la confusion mentale peut résulter d'une altération de la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Des convulsions peuvent-elles se produire ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des convulsions peuvent être un signe d'irritation cérébrale due à une défaillance." } }, { "@type": "Question", "name": "Quels symptômes neurologiques sont préoccupants ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des engourdissements, des faiblesses musculaires ou des troubles de l'équilibre sont préoccupants." } }, { "@type": "Question", "name": "La fatigue chronique est-elle liée à cette condition ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, la fatigue chronique peut être un symptôme associé à des troubles de la barrière." } }, { "@type": "Question", "name": "Comment prévenir les troubles de la barrière hémato-encéphalique ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Maintenir un mode de vie sain, éviter les toxines et gérer les maladies chroniques aide." } }, { "@type": "Question", "name": "Les vaccinations sont-elles importantes ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les vaccinations peuvent prévenir certaines infections qui affectent la barrière." } }, { "@type": "Question", "name": "Le contrôle de la pression artérielle aide-t-il ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un bon contrôle de la pression artérielle peut réduire le risque de défaillance." } }, { "@type": "Question", "name": "L'alimentation joue-t-elle un rôle ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée riche en antioxydants peut protéger la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Le stress peut-il affecter la barrière ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le stress chronique peut avoir un impact négatif sur la santé de la barrière." } }, { "@type": "Question", "name": "Quels traitements sont disponibles pour les troubles de la barrière ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements incluent des médicaments anti-inflammatoires et des thérapies ciblées." } }, { "@type": "Question", "name": "La chirurgie est-elle une option de traitement ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "La chirurgie peut être nécessaire pour retirer des tumeurs ou traiter des infections." } }, { "@type": "Question", "name": "Les corticostéroïdes sont-ils utilisés ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les corticostéroïdes peuvent réduire l'inflammation et améliorer la fonction de la barrière." } }, { "@type": "Question", "name": "Y a-t-il des traitements expérimentaux ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Des traitements expérimentaux incluent des thérapies géniques et des médicaments innovants." } }, { "@type": "Question", "name": "Comment la rééducation peut-elle aider ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "La rééducation peut aider à restaurer les fonctions neurologiques altérées par des troubles." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des infections, des inflammations et des troubles neurologiques graves peuvent survenir." } }, { "@type": "Question", "name": "Les AVC sont-ils une complication possible ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une défaillance de la barrière peut augmenter le risque d'accidents vasculaires cérébraux." } }, { "@type": "Question", "name": "Des troubles cognitifs peuvent-ils se développer ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles cognitifs peuvent résulter d'une altération prolongée de la barrière." } }, { "@type": "Question", "name": "La démence est-elle une complication ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines formes de démence peuvent être liées à des dysfonctionnements de la barrière." } }, { "@type": "Question", "name": "Les troubles psychiatriques sont-ils possibles ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des troubles psychiatriques peuvent être exacerbés par des problèmes de barrière." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque de défaillance ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'âge avancé, les maladies auto-immunes et les infections sont des facteurs de risque." } }, { "@type": "Question", "name": "Le diabète est-il un facteur de risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le diabète peut affecter la santé de la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "L'alcoolisme influence-t-il la barrière ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'alcoolisme chronique peut endommager la barrière hémato-encéphalique." } }, { "@type": "Question", "name": "Le tabagisme est-il un risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le tabagisme est associé à une augmentation des troubles neurologiques." } }, { "@type": "Question", "name": "Les infections virales sont-elles préoccupantes ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines infections virales peuvent compromettre la barrière hémato-encéphalique." } } ] } ] }

Sources (10000 au total)

The prognostic implication of visual acuity at the time of uveal melanoma diagnosis.

Visual outcomes after primary tumour treatment of uveal melanoma (UM) have been investigated repeatedly. This study evaluates the correlation between best-corrected visual acuity (BCVA) before treatme... Pre-treatment BCVA was examined in relation to tumour dimensions and location, and survival in a retrospective cohort of 1809 patients who underwent plaque brachytherapy. BCVA was also correlated to t... The mean BCVA of the tumour eye prior to plaque brachytherapy was LogMAR 0.42 (SD 0.46). Patients with low BCVA (LogMAR ≥ 1.00) did not differ in age (p = 0.19) and had similar frequency of ciliary bo... UM patients with low BCVA before primary tumour treatment have a worse prognosis, likely related to increased tumour dimensions. Future studies should examine the prognostic significance of BCVA in re...

Association of macular OCT and OCTA parameters with visual acuity in glaucoma.

To investigate the association of macular optical coherence tomography (OCT)/OCT angiography (OCTA) parameters with visual acuity (VA) in glaucoma.... 144 pseudophakic primary open-angle glaucoma eyes were included. Foveal (fVD), parafoveal (pf), perifoveal (perifVD) and whole-image vessel densities (wiVD) of superficial and deep layers, and their c... In early glaucoma (80 eyes), no parameter correlated with VA. In moderate-advanced glaucoma (64 eyes), greater FAZ area (β=0.228) and circumference (β=0.063) correlated with worse VA (p<0.05), but not... Some macular OCT/OCTA parameters were associated with VA in moderate-advanced, but not early glaucoma. These structural parameters may help identify glaucoma patients with impaired vision and reduced ... NCT00221897....

Characterization of vision in pediatric retinoblastoma survivors beyond visual acuity.

Retinoblastoma (RB) and its associated treatments can significantly impact visual acuity. However, little is known regarding other measures of vision, such as contrast sensitivity or saccades. The aim... This cross-sectional study included children aged 5-17 years who had completed treatment for RB. Visual acuity, saccades via fixation analysis, and contrast sensitivity by Cardiff contrast sensitivity... Eleven children were enrolled (mean age, 10.7 ± 3.9 years). Treatment included enucleation (8 children [73%]) and chemotherapy (10 [91%]). Of the 11, one participant was unable to complete testing of ... Decreased contrast sensitivity and impaired saccades were universally observed in this cohort of RB survivors. Comprehensive visual evaluation should be considered for all RB survivors to provide opti...

CT analysis of predictors for visual acuity in optic neuropathy with mucocele.

To evaluate the causative and risk factors for optic neuropathy with mucocele via imaging studies.... We included 21 patients with rhinogenous optic neuropathy with mucocele. We collected data on the sinus involved, age, sex, number of days from the onset of visual impairment to surgery, and computed ... After surgery, visual acuity improved in 16/21 (76.2%) patients, and a correlation analysis showed a significant positive correlation between pre-operative and post-operative visual acuity. In imaging... Imaging studies of optic neuropathy with mucocele help to determine the risk factors and perform early and precise diagnostic imaging and decision-making for surgery....

Assessment of cataract surgery outcomes in Nampula (Mozambique): visual acuity, visual function and quality of life.

Despite advances in surgical techniques, cataract remains the leading cause of preventable blindness, and massive surgeries have been adopted as a strategy to change this situation. Monitoring the res... This is a prospective and longitudinal study in which translation, cultural adaptation and validation of the visual function (VF) and quality of life (QoL) questionnaire were performed. The appearance... VF and QoL questionnaires showed one-dimension, good values of TLI (0.973, 0.951) and SRMR (0.057, 0.054), and for each item, weights > 0.7, H2 > 0.5, ranges > 5.8 and the RMSEA < 0.08. Correlations f... The cataract surgery outcomes are outside the WHO recommendations regarding VA, but they have had a great impact on improving VF and QoL. The questionnaires showed excellent psychometric properties an...