questionsmedicales.fr
Phénomènes physiologiques oculaires
Acuité visuelle
Acuité visuelle : Questions médicales fréquentes
Termes MeSH sélectionnés :
Gait Disorders, Neurologic
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "MedicalWebPage",
"name": "Acuité visuelle : Questions médicales les plus fréquentes",
"headline": "Acuité visuelle : Comprendre les symptômes, diagnostics et traitements",
"description": "Guide complet et accessible sur les Acuité visuelle : explications, diagnostics, traitements et prévention. Information médicale validée destinée aux patients.",
"datePublished": "2024-06-20",
"dateModified": "2025-03-17",
"inLanguage": "fr",
"medicalAudience": [
{
"@type": "MedicalAudience",
"name": "Grand public",
"audienceType": "Patient",
"healthCondition": {
"@type": "MedicalCondition",
"name": "Acuité visuelle"
},
"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": "Phénomènes physiologiques oculaires",
"url": "https://questionsmedicales.fr/mesh/D009799",
"about": {
"@type": "MedicalCondition",
"name": "Phénomènes physiologiques oculaires",
"code": {
"@type": "MedicalCode",
"code": "D009799",
"codingSystem": "MeSH"
},
"identifier": {
"@type": "PropertyValue",
"propertyID": "MeSH Tree",
"value": "G14"
}
}
},
"hasPart": [
{
"@type": "MedicalWebPage",
"name": "Sensibilité au contraste",
"alternateName": "Contrast Sensitivity",
"url": "https://questionsmedicales.fr/mesh/D015350",
"about": {
"@type": "MedicalCondition",
"name": "Sensibilité au contraste",
"code": {
"@type": "MedicalCode",
"code": "D015350",
"codingSystem": "MeSH"
},
"identifier": {
"@type": "PropertyValue",
"propertyID": "MeSH Tree",
"value": "G14.940.500"
}
}
},
{
"@type": "MedicalWebPage",
"name": "Emmétropie",
"alternateName": "Emmetropia",
"url": "https://questionsmedicales.fr/mesh/D058453",
"about": {
"@type": "MedicalCondition",
"name": "Emmétropie",
"code": {
"@type": "MedicalCode",
"code": "D058453",
"codingSystem": "MeSH"
},
"identifier": {
"@type": "PropertyValue",
"propertyID": "MeSH Tree",
"value": "G14.940.750"
}
}
}
],
"about": {
"@type": "MedicalCondition",
"name": "Acuité visuelle",
"alternateName": "Visual Acuity",
"code": {
"@type": "MedicalCode",
"code": "D014792",
"codingSystem": "MeSH"
}
},
"author": [
{
"@type": "Person",
"name": "Susan J Leat",
"url": "https://questionsmedicales.fr/author/Susan%20J%20Leat",
"affiliation": {
"@type": "Organization",
"name": "School of Optometry and Vision Science, University of Waterloo, Canada. Electronic address: leat@uwaterloo.ca."
}
},
{
"@type": "Person",
"name": "Elizabeth L Irving",
"url": "https://questionsmedicales.fr/author/Elizabeth%20L%20Irving",
"affiliation": {
"@type": "Organization",
"name": "School of Optometry and Vision Science, University of Waterloo, Canada."
}
},
{
"@type": "Person",
"name": "Rachel Gage",
"url": "https://questionsmedicales.fr/author/Rachel%20Gage",
"affiliation": {
"@type": "Organization",
"name": "Department of Psychology, University of Minnesota, Minneapolis, MN, USA."
}
},
{
"@type": "Person",
"name": "Kazuno Negishi",
"url": "https://questionsmedicales.fr/author/Kazuno%20Negishi",
"affiliation": {
"@type": "Organization",
"name": "Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan."
}
},
{
"@type": "Person",
"name": "Masahiko Ayaki",
"url": "https://questionsmedicales.fr/author/Masahiko%20Ayaki",
"affiliation": {
"@type": "Organization",
"name": "Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan."
}
}
],
"citation": [
{
"@type": "ScholarlyArticle",
"name": "Quantification of pathological gait parameter thresholds of idiopathic normal pressure hydrocephalus patients in clinical gait analysis.",
"datePublished": "2022-10-31",
"url": "https://questionsmedicales.fr/article/36316420",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1038/s41598-022-22692-1"
}
},
{
"@type": "ScholarlyArticle",
"name": "Cumulative additional information does not improve the neuromuscular control during postural responses to perturbations in postural instability/gait disorders subtype of Parkinson's disease.",
"datePublished": "2022-07-08",
"url": "https://questionsmedicales.fr/article/35811017",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1016/j.exger.2022.111892"
}
},
{
"@type": "ScholarlyArticle",
"name": "[Clinical value of instrumental gait analysis].",
"datePublished": "2023-06-07",
"url": "https://questionsmedicales.fr/article/37286624",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1007/s00132-023-04397-z"
}
},
{
"@type": "ScholarlyArticle",
"name": "The effects of Robot-assisted gait training and virtual reality on balance and gait in stroke survivors: A randomized controlled trial.",
"datePublished": "2023-05-18",
"url": "https://questionsmedicales.fr/article/37262976",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1016/j.gaitpost.2023.05.013"
}
},
{
"@type": "ScholarlyArticle",
"name": "How many observations in the reference dataset are required to compute a consistent Gait Deviation Index & Gait Profile Score?",
"datePublished": "2022-10-19",
"url": "https://questionsmedicales.fr/article/36327538",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1016/j.gaitpost.2022.10.012"
}
}
],
"breadcrumb": {
"@type": "BreadcrumbList",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "questionsmedicales.fr",
"item": "https://questionsmedicales.fr"
},
{
"@type": "ListItem",
"position": 2,
"name": "Phénomènes physiologiques oculaires",
"item": "https://questionsmedicales.fr/mesh/D009799"
},
{
"@type": "ListItem",
"position": 3,
"name": "Acuité visuelle",
"item": "https://questionsmedicales.fr/mesh/D014792"
}
]
}
},
{
"@type": "MedicalWebPage",
"name": "Article complet : Acuité visuelle - Questions et réponses",
"headline": "Questions et réponses médicales fréquentes sur Acuité visuelle",
"description": "Une compilation de questions et réponses structurées, validées par des experts médicaux.",
"datePublished": "2025-05-15",
"inLanguage": "fr",
"hasPart": [
{
"@type": "MedicalWebPage",
"name": "Diagnostic",
"headline": "Diagnostic sur Acuité visuelle",
"description": "Comment évaluer l'acuité visuelle ?\nQuels tests sont utilisés pour le diagnostic ?\nQuand consulter un ophtalmologiste ?\nQu'est-ce qu'un examen de la vue ?\nQuels signes indiquent une mauvaise acuité visuelle ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-diagnostic"
},
{
"@type": "MedicalWebPage",
"name": "Symptômes",
"headline": "Symptômes sur Acuité visuelle",
"description": "Quels sont les symptômes d'une mauvaise acuité visuelle ?\nLa vision double est-elle liée à l'acuité visuelle ?\nComment la myopie affecte-t-elle l'acuité visuelle ?\nQuels sont les signes d'une dégénérescence maculaire ?\nLa fatigue oculaire peut-elle réduire l'acuité visuelle ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-symptômes"
},
{
"@type": "MedicalWebPage",
"name": "Prévention",
"headline": "Prévention sur Acuité visuelle",
"description": "Comment prévenir la perte d'acuité visuelle ?\nL'utilisation d'écrans affecte-t-elle l'acuité visuelle ?\nQuels aliments sont bons pour la santé des yeux ?\nLe tabagisme affecte-t-il l'acuité visuelle ?\nComment protéger ses yeux du soleil ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-prévention"
},
{
"@type": "MedicalWebPage",
"name": "Traitements",
"headline": "Traitements sur Acuité visuelle",
"description": "Quels traitements améliorent l'acuité visuelle ?\nComment les lunettes corrigent-elles l'acuité visuelle ?\nLa chirurgie au laser est-elle efficace ?\nQuels médicaments peuvent aider l'acuité visuelle ?\nLes exercices oculaires améliorent-ils l'acuité ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-traitements"
},
{
"@type": "MedicalWebPage",
"name": "Complications",
"headline": "Complications sur Acuité visuelle",
"description": "Quelles complications peuvent résulter d'une mauvaise acuité ?\nLa cataracte affecte-t-elle l'acuité visuelle ?\nQuels risques sont associés à la dégénérescence maculaire ?\nComment le diabète affecte-t-il l'acuité visuelle ?\nLes infections oculaires peuvent-elles réduire l'acuité ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-complications"
},
{
"@type": "MedicalWebPage",
"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Acuité visuelle",
"description": "Quels sont les facteurs de risque pour l'acuité visuelle ?\nL'âge influence-t-il l'acuité visuelle ?\nLe diabète est-il un facteur de risque ?\nLes antécédents familiaux jouent-ils un rôle ?\nL'exposition au soleil est-elle un risque ?",
"url": "https://questionsmedicales.fr/mesh/D014792?mesh_terms=Gait+Disorders,+Neurologic&page=3#section-facteurs de risque"
}
]
},
{
"@type": "FAQPage",
"mainEntity": [
{
"@type": "Question",
"name": "Comment évaluer l'acuité visuelle ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'acuité visuelle est évaluée à l'aide de tableaux optométriques et de tests spécifiques."
}
},
{
"@type": "Question",
"name": "Quels tests sont utilisés pour le diagnostic ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les tests incluent le test de Snellen et le test de vision de près."
}
},
{
"@type": "Question",
"name": "Quand consulter un ophtalmologiste ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Consultez un ophtalmologiste si vous avez une vision floue persistante ou des changements soudains."
}
},
{
"@type": "Question",
"name": "Qu'est-ce qu'un examen de la vue ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "C'est un examen complet pour évaluer la santé oculaire et l'acuité visuelle."
}
},
{
"@type": "Question",
"name": "Quels signes indiquent une mauvaise acuité visuelle ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des signes incluent la difficulté à lire, à reconnaître des visages ou à voir de loin."
}
},
{
"@type": "Question",
"name": "Quels sont les symptômes d'une mauvaise acuité visuelle ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes incluent vision floue, difficulté à voir la nuit et fatigue oculaire."
}
},
{
"@type": "Question",
"name": "La vision double est-elle liée à l'acuité visuelle ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la vision double peut indiquer un problème d'acuité visuelle ou de coordination oculaire."
}
},
{
"@type": "Question",
"name": "Comment la myopie affecte-t-elle l'acuité visuelle ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "La myopie rend difficile la vision des objets éloignés, affectant l'acuité visuelle."
}
},
{
"@type": "Question",
"name": "Quels sont les signes d'une dégénérescence maculaire ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les signes incluent des taches sombres dans le champ visuel et une vision déformée."
}
},
{
"@type": "Question",
"name": "La fatigue oculaire peut-elle réduire l'acuité visuelle ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la fatigue oculaire peut temporairement diminuer l'acuité visuelle et causer des douleurs."
}
},
{
"@type": "Question",
"name": "Comment prévenir la perte d'acuité visuelle ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Adoptez une alimentation saine, protégez vos yeux du soleil et faites des examens réguliers."
}
},
{
"@type": "Question",
"name": "L'utilisation d'écrans affecte-t-elle l'acuité visuelle ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, une utilisation prolongée d'écrans peut causer fatigue oculaire et diminuer temporairement l'acuité."
}
},
{
"@type": "Question",
"name": "Quels aliments sont bons pour la santé des yeux ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les aliments riches en oméga-3, vitamines C et E, et zinc sont bénéfiques pour les yeux."
}
},
{
"@type": "Question",
"name": "Le tabagisme affecte-t-il l'acuité visuelle ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le tabagisme augmente le risque de maladies oculaires et peut réduire l'acuité visuelle."
}
},
{
"@type": "Question",
"name": "Comment protéger ses yeux du soleil ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Portez des lunettes de soleil avec protection UV pour réduire les risques de dommages oculaires."
}
},
{
"@type": "Question",
"name": "Quels traitements améliorent l'acuité visuelle ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les traitements incluent des lunettes, des lentilles de contact et la chirurgie réfractive."
}
},
{
"@type": "Question",
"name": "Comment les lunettes corrigent-elles l'acuité visuelle ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les lunettes corrigent la réfraction de la lumière pour améliorer la clarté de la vision."
}
},
{
"@type": "Question",
"name": "La chirurgie au laser est-elle efficace ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la chirurgie au laser peut corriger des problèmes de vision comme la myopie et l'hypermétropie."
}
},
{
"@type": "Question",
"name": "Quels médicaments peuvent aider l'acuité visuelle ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des médicaments peuvent traiter des conditions comme le glaucome, mais ne corrigent pas l'acuité."
}
},
{
"@type": "Question",
"name": "Les exercices oculaires améliorent-ils l'acuité ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les exercices oculaires peuvent aider à soulager la fatigue, mais n'améliorent pas l'acuité structurelle."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent résulter d'une mauvaise acuité ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent des accidents, une qualité de vie réduite et des problèmes psychologiques."
}
},
{
"@type": "Question",
"name": "La cataracte affecte-t-elle l'acuité visuelle ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la cataracte peut provoquer une vision floue et une diminution de l'acuité visuelle."
}
},
{
"@type": "Question",
"name": "Quels risques sont associés à la dégénérescence maculaire ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "La dégénérescence maculaire peut entraîner une perte de vision centrale et des difficultés à lire."
}
},
{
"@type": "Question",
"name": "Comment le diabète affecte-t-il l'acuité visuelle ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le diabète peut causer des complications oculaires comme la rétinopathie, affectant l'acuité."
}
},
{
"@type": "Question",
"name": "Les infections oculaires peuvent-elles réduire l'acuité ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les infections oculaires peuvent entraîner une inflammation et une diminution de l'acuité visuelle."
}
},
{
"@type": "Question",
"name": "Quels sont les facteurs de risque pour l'acuité visuelle ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent l'âge, les antécédents familiaux, le diabète et l'exposition au soleil."
}
},
{
"@type": "Question",
"name": "L'âge influence-t-il l'acuité visuelle ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'acuité visuelle tend à diminuer avec l'âge en raison de diverses conditions oculaires."
}
},
{
"@type": "Question",
"name": "Le diabète est-il un facteur de risque ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le diabète augmente le risque de maladies oculaires qui peuvent affecter l'acuité."
}
},
{
"@type": "Question",
"name": "Les antécédents familiaux jouent-ils un rôle ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des antécédents familiaux de maladies oculaires peuvent augmenter le risque d'acuité réduite."
}
},
{
"@type": "Question",
"name": "L'exposition au soleil est-elle un risque ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, une exposition prolongée sans protection peut endommager les yeux et affecter l'acuité."
}
}
]
}
]
}
The aim of the study was to distinguish the hypokinetic gait disorder in idiopathic normal pressure hydrocephalus (NPH) patients from the gait decline in the elderly population by quantifying patholog...
Postural response impairments in postural instability and gait disorders (PIGD) subtype patients may be attributed to Parkinson's disease (PD)-deterioration in central-set (programing/modulating of ce...
To analyze the effect of cumulative additional information on postural responses after perturbation in PIGD and neurologically healthy older adults (CG)....
Perturbations were applied in 16 PIGD and 19 CG by the support-base translation. Participants performed 3 blocks of 5 trials without additional information (B1-B3, Day 1) and 5 trials of each cumulati...
PIGD decreased the range of CoP in B3 while CG decreased both range of CoP and the integral of antagonist's muscle activity (iEMG) in B2. Also, PIGD decreased the recovery time in C4 while CG increase...
Additional information provided before postural control assessment influences the postural response in PIGD and CG differently. PIGD demonstrated inflexibility of central-set in modulating the neuromu...
Instrumental gait analysis is becoming an established addition to conventional diagnostic methods for the clinical assessment of complex movement disorders. It can provide objective and high resolutio...
Instrumental gait analysis can add observer independent parameters to the treatment planning of individuals as well as provide insights into pathomechanisms with clinical research studies. Limiting fa...
Stroke survivors often experience balance and gait problems, which can affect their quality of life and independence in daily living activities. Robot-assisted gait training, such as Lokomat with virt...
What are the specific effects of each Lokomat augmented performance feedback application on balance and spatiotemporal parameters of gait in stroke survivors?...
The study is a randomized controlled trial conducted with four groups: Control Group, Endurance Group, Attention and Motivation Group, and Activity Timing Group. All participants received six weeks of...
The study involved 56 male stroke survivors (mean age: 60.02 ± 6.83 years, post-stroke time: 238.88 ± 40.88 days). All groups improved walking speed and distance significantly, but Endurance was bette...
The Gait Deviation Index (GDI) and the Gait Profile Score (GPS) are the most used scores to sum up gait deviations and are used as primary outcomes in many clinical studies. They are considered as equ...
Define the number of observations needed in the reference dataset to compute consistent and reliable GDI and GPS....
Fifty individuals with cerebral palsy (CP) were randomly selected from our laboratory database. Both scores were computed based on the reference dataset of Schwartz et al. (2008). A bootstrap analysis...
A minimum of 90 and 20 observations are required to compute consistent GDI and GPS, respectively. The number of observations has a higher impact on the GDI than the GPS, mainly because the GPS calcula...
Freezing of gait (FOG) is one of the most disabling symptoms of Parkinsonism. Moreover, it does not respond well to medication. Visual cues have been shown to alleviate FOG in Parkinsonism; however, t...
People with Parkinson's Disease (PD) show abnormal gait patterns compromising their independence and quality of life. Among all gait alterations due to PD, reduced step length, increased cadence, and ...
In this case series, seven subjects (age: 70.4 ± 8.1 years; H&Y: 2.7 ± 0.3) used the BI and performed a test on a 10-meter walkway (10mWT) and a two-minute walk test (2MWT) as pre-training (Pre-trn) a...
After training subjects improved gait speed (Pre-trn_No-Bf: 0.72(0.59,0.72) m/sec; Post-trn_Bf: 0.95(0.69,0.98) m/sec; p = 0.043) and step length (Pre-trn_No-Bf: 0.87(0.81,0.96) meters; Post-trn_Bf: 1...
The BI seems to be usable and safe for PD users. Temporal gait parameters have been measured during clinical walking tests providing detailed outcomes. A short period of training with the BI suggests ...
The study protocol was registered (DGDMF.VI/P/I.5.i.m.2/2019/1297) and approved by the General Directorate of Medical Devices and Pharmaceutical Service of the Italian Ministry of Health and by the et...
Gait abnormalities are frequent in children and can be caused by different pathologies, such as cerebral palsy, neuromuscular disease, toe walker syndrome, etc. Analysis of the "gait pattern" (i.e., t...
The efficacy of robotic-assisted gait training (RAGT) should be considered versatilely; among which, gait assessment is one of the most important measures; observational gait assessment is the most co...
This single-blind randomized controlled trial is aimed at analyzing the impact of RAGT on the 3DGA parameters and muscle activation in patients with subacute stroke and evaluating the clinical effect ...
This randomized controlled trial evaluated the improvement of 4-week RAGT on patients with subacute stroke by 3DGA and surface electromyography (sEMG), combined with clinical scales: experimental grou...
After 4 weeks of intervention, intragroup comparison showed that walking speed, temporal symmetry, bilateral stride length, range of motion (ROM) of the bilateral hip, flexion angle of the affected kn...
Compared with conventional gait training, RAGT successfully improved part of the spatiotemporal parameters of patients and optimized the motion of the affected lower limb joints and muscle activation ...
Gait disorders are a common feature of neurological disease. The gait examination is an essential part of the neurological clinical assessment, providing valuable clues to a myriad of causes. Understa...