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": "Mental health and visual acuity in patients with age-related macular degeneration.", "datePublished": "2022-10-02", "url": "https://questionsmedicales.fr/article/36183081", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1186/s12886-022-02602-9" } }, { "@type": "ScholarlyArticle", "name": "Factors associated with visual acuity improvement with a binocular digital therapeutic for amblyopia.", "datePublished": "2023-08-21", "url": "https://questionsmedicales.fr/article/37611818", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.jaapos.2023.06.007" } }, { "@type": "ScholarlyArticle", "name": "Prevalence of Impairment of Visual Acuity and Severity of Retinopathy in Patients with Diabetes Mellitus.", "datePublished": "2022-08-08", "url": "https://questionsmedicales.fr/article/35940177", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1055/a-1752-0024" } }, { "@type": "ScholarlyArticle", "name": "Relationship between dynamic visual acuity and multiple object tracking performance.", "datePublished": "2022-06-06", "url": "https://questionsmedicales.fr/article/35668637", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1177/03010066221104281" } }, { "@type": "ScholarlyArticle", "name": "Diurnal Variation of Visual Acuity and Refraction in Fuchs Endothelial Corneal Dystrophy.", "datePublished": "2023-05-08", "url": "https://questionsmedicales.fr/article/37157119", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1097/ICO.0000000000003291" } } ], "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": "2025-05-16", "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=4#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=4#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=4#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=4#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=4#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=4#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)

Mental health and visual acuity in patients with age-related macular degeneration.

Visual acuity (VA) loss has been associated with depression in patients with age-related macular degeneration (AMD). However, previous studies did not incorporate subgroups of AMD when correlating VA ... AMD patients classified by multi-modal imaging were recruited into an AMD registry. Habitual VA was obtained by ophthalmic technicians using the Snellen VA at distance. At enrollment, patients complet... Eight hundred seventy-five patients were included in the study. Patients with bilateral geographic atrophy (GA) or bilateral GA and neovascular (NV) AMD scored lowest on the mental health subscales wi... There is a significant association between mental health questionnaire scores and AMD classification, as well as VA in both the better and worse-seeing eyes in patients with AMD. It is important for c...

Prevalence of Impairment of Visual Acuity and Severity of Retinopathy in Patients with Diabetes Mellitus.

No information exists on the frequency of visual impairment in people with diabetes mellitus (DM) in Germany. In this study, the prevalence of vision impairment in those individuals was investigated.... We retrospectively analyzed a cohort of 295 people (14221 consultations) at a university outpatient clinic with any type of DM and an available ETDRS-Score and visual acuity. The primary outcome was t... The prevalence of visual impairment in participants with DM was 11.2%; among these individuals, 81.8% had no or non-proliferative retinopathy. In the DM2 subgroup, 81.5% (n=22) of the visually impaire... The prevalence of impaired vision in people with diabetes in our cohort was 11.2%,<20% of visual impairment in people with diabetes is caused by diabetic retinopathy, and 69.7% of participants with vi...

Diurnal Variation of Visual Acuity and Refraction in Fuchs Endothelial Corneal Dystrophy.

Patients with advanced Fuchs endothelial corneal dystrophy frequently report poor vision in the morning, which improves as the day progresses. This study quantified the amount of variation in near and... This was a prospective cohort study. Best-corrected distance visual acuity and near visual acuity were tested in participants with clinically advanced Fuchs dystrophy and in controls with healthy corn... In Fuchs dystrophy, the mean distance visual acuity was worse by -3 letters (95% confidence interval, -4 to -1) directly after eye opening in the morning compared with late afternoon. No such differen... Distance and near visual acuity and refraction changes over the course of the day in patients with advanced Fuchs dystrophy. Although small changes in refraction may not usually require a second set o...

Pupil size effect on binocular summation for visual acuity and light disturbance.

Smaller pupil size under binocular conditions could justify partially the improvement of visual performance when compared to monocular conditions. The purpose of this study was to assess the binocular... Fifteen young subjects were recruited in this crossover study. Light disturbance index (LDI) was evaluated with the light disturbance analyzer and low (LCDVA) and high (HCDVA) contrast visual acuity w... Our results showed poorer visual performance in monocular than the binocular condition. An increasing deterioration was observed with the level of spherical defocus. Positive binocular summation for v... Binocular summation was observed under different conditions of spherical and cylindrical optical degradation of the image quality when the pupil size was fully controlled. This suggests that a neural ...

Impact of induced pseudomyopia and refractive fluctuations of accommodative spasm on visual acuity.

High-contrast visual acuity is disproportionately poor in patients with accommodative spasm subtype of near reflex (SNR-A), relative to uncorrected refractive errors of equivalent magnitude. This exag... To determine how combinations of pseudomyopic refraction and its temporal variations in SNR-A impact high-contrast visual acuity by inducing these patterns in healthy cyclopleged adults, relative to t... Refractive profiles of 15 patients with SNR-A were obtained from a previous study, averaged, and induced before the right eye of 14 cyclopleged adults (mean ±1 SD age: 22.7 ± 2.6 yrs) by feeding the p... The induced refractive fluctuations ranged from -0.80 to -1.75D, around a mean pseudomyopia of -1.20D. Visual acuity deterioration was maximum for the combination of pseudomyopia and temporal fluctuat... Combination of induced pseudomyopia and temporal fluctuations in refraction produces an additive loss of visual acuity and task precision, relative to baseline and each factor considered separately....

Cataract surgery in neovascular AMD: impact on visual acuity and disease activity.

Cataract and neovascular age-related macular degeneration (nAMD) often co-exist and both contribute to impaired vision. It has been debated whether cataract surgery can increase nAMD activity. The pur... Data was obtained from the Swedish Macular Register, the Swedish National Cataract Register, optical coherence tomography (OCT) images and patient charts. All eyes were treated at the Department of Op... In total, 156 patients (168 eyes) were included. The mean age at cataract surgery was 82 (standard deviation, SD 6) years. Both distance and near visual acuity improved after surgery. Distance visual ... Cataract surgery improved visual acuity in patients with on-going treatment for nAMD and did not affect anti-VEGF treatment intensity. Macular morphology remained unchanged. The slight increase in int...