questionsmedicales.fr
Phénomènes physiologiques oculaires
Acuité visuelle
Acuité visuelle : Questions médicales fréquentes
Termes MeSH sélectionnés :
{
"@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": "Optimization of BMI-Based Images for Overweight and Obese Patients - Implications on Image Quality, Quantification, and Radiation Dose in Whole Body",
"datePublished": "2023-03-20",
"url": "https://questionsmedicales.fr/article/37483872",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1007/s13139-023-00795-5"
}
},
{
"@type": "ScholarlyArticle",
"name": "Impact of linked color imaging and blue laser imaging on the diagnosis of esophageal squamous cell carcinoma in iodine unstained areas.",
"datePublished": "2023-02-22",
"url": "https://questionsmedicales.fr/article/36810969",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1002/kjm2.12660"
}
},
{
"@type": "ScholarlyArticle",
"name": "Impact of deep learning-based image reconstruction on image quality and lesion visibility in renal computed tomography at different doses.",
"datePublished": "2023-02-15",
"url": "https://questionsmedicales.fr/article/37064389",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.21037/qims-22-852"
}
},
{
"@type": "ScholarlyArticle",
"name": "Evaluation of the detection rate of high‑grade gastric intraepithelial neoplasia using linked color imaging and white light imaging.",
"datePublished": "2023-01-24",
"url": "https://questionsmedicales.fr/article/36778042",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.3892/etm.2023.11806"
}
},
{
"@type": "ScholarlyArticle",
"name": "The role of the orbitofrontal cortex in exercise addiction and exercise motivation: A brain imaging study based on multimodal magnetic resonance imaging.",
"datePublished": "2023-01-10",
"url": "https://questionsmedicales.fr/article/36638963",
"identifier": {
"@type": "PropertyValue",
"propertyID": "DOI",
"value": "10.1016/j.jad.2023.01.030"
}
}
],
"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": "2025-05-10",
"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=Diffusion+Tensor+Imaging&page=1000#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=Diffusion+Tensor+Imaging&page=1000#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=Diffusion+Tensor+Imaging&page=1000#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=Diffusion+Tensor+Imaging&page=1000#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=Diffusion+Tensor+Imaging&page=1000#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=Diffusion+Tensor+Imaging&page=1000#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."
}
}
]
}
]
}
In PET/CT imaging, the activity of the...
The NEMA-IEC-body phantom was scanned using the mCT 128-slice scanner. The spheres and background were filed with F-18 activity. Spheres-to-background ratio was 4:1. Data was reconstructed using the O...
The visual assessment of the optimized phantom images showed better image quality and contrast-recovery-coefficients (CRCs) values compared to the routine reconstruction. Using patient data, the optim...
The optimized BMI-based approach using 1 iteration, 21 subsets, and 3 mm Hamming filter improves image quality, reduces radiation dose, and provides, at least, similar quantification compared to the B...
The pink color sign in iodine unstained areas is useful to differentiate esophageal squamous cell carcinoma (ESCC) from other lesions. However, some ESCCs have obscure color findings which affect the ...
Numerous computed tomography (CT) image reconstruction algorithms have been developed to improve image quality, and high-quality renal CT images are crucial to clinical diagnosis. This study evaluated...
From January 2020 to May 2021, we prospectively included 101 patients who underwent renal contrast-enhanced CT scanning (69 at 120 kV; 32 at 80 kV). All image data were reconstructed with ASiR-V (30% ...
Quantitative values (noise, SNR, CNR, and NRR) significantly differed between all reconstructions at 120 and 80 kV (P<0.001) and between each reconstruction, except ASiR-V 70%...
DLIR significantly improved the image quality and lesion visibility of renal CT compared with ASiR-V, even at a low dose....
As an endoscopic technology for the enhancement of images, linked color imaging (LCI) performs well when used for the early detection and diagnosis of gastrointestinal cancer. However, literature data...
Excessive exercise may also lead to exercise addiction (EXA), which is harmful to people's physical and mental health. Behavioral and neuroimaging studies have demonstrated that addictive disorders ar...
We investigated 130 regularly exercised participants with EXA symptoms to explore the neurobiological basis of EXA and its association with motivation. The correlation between EXA and gray matter volu...
Whole-brain correlation analyses showed that the GMV of the right orbitofrontal cortex (OFC) was negatively correlated with EXA. The function of the right OFC played an indirect role in EXA and affect...
The results should be interpreted carefully because only the people with EXA symptoms were included....
This study provided evidence for the underlying neuropsychological mechanism of the important role of the right OFC in EXA and revealed that there may be a decrease in executive control function in EX...
To evaluate the image quality of high-spatial-resolution two-dimensional (2D) late gadolinium enhancement (LGE) cardiac MRI compared with conventional normal-resolution LGE MRI....
This prospective study included participants suspected of having cardiomyopathy who underwent cardiac MRI between March 2021 and December 2021. Normal-resolution and high-resolution 2D LGE sequences (...
In total, 120 participants were evaluated (mean age, 56 years ± 17 [SD]; 72 men). Features smaller than 1 mm were detectable only on high-resolution images of the phantom. In vivo, the image resolutio...
Comparison of image quality in 2D high-resolution and normal-resolution LGE cardiac MRI demonstrated the highest resolution for high-resolution IR and high-resolution PSIR magnitude sequences....
Non-secretory multiple myeloma (NSMM) is an extremely rare variant of multiple myeloma (MM) and accounts for a maximum of 5% of all myeloma cases. This variant of MM usually represents a diagnostic ch...
Pediatric soft tissue tumors of the extremity include rhabdomyosarcoma and nonrhabdomyosarcoma neoplasms. This manuscript provides consensus-based imaging recommendations for imaging evaluation at dia...
Colposcopy is an important part of cervical screening/management programs. Colposcopic appearance is often classified, for teaching and telemedicine, based on static images that do not reveal the dyna...
Approximately 5000 colposcopic examinations conducted with the DYSIS colposcopic system were divided into 10 random sets, each assigned to a separate expert colposcopist. Colposcopists first classifie...
Of 4640 patients with adequate images, only 24.4% were correctly categorized by single image visual assessment (11% of 64 cancers; 31% of 605 CIN3; 22.4% of 558 CIN2; 23.9% of 3412 < CIN2). Individual...
Substantial variation exists in visual assessment of colposcopic images, even when a 17-image time series showing the two-minute process of acetowhitening is presented. We are currently evaluating whe...
Hepatocellular carcinoma (HCC) is the most common form of primary liver cancer and remains a global health challenge. Small interfering RNA (siRNA) is a promising therapeutic modality that blocks mult...