Comment détecte-t-on un génome viral ?

On utilise des techniques comme la PCR pour identifier le matériel génétique viral.

Quels tests sont utilisés pour le génome viral ?

Les tests sérologiques et les tests moléculaires sont couramment utilisés.

Peut-on séquencer un génome viral ?

Oui, le séquençage permet d'analyser la structure du génome viral.

Quels symptômes indiquent une infection virale ?

Fièvre, fatigue, toux et douleurs musculaires peuvent signaler une infection virale.

Comment différencier les virus par leur génome ?

L'analyse du type d'acide nucléique (ADN ou ARN) aide à classer les virus.

Quels sont les symptômes d'une infection virale ?

Les symptômes incluent fièvre, toux, fatigue, et parfois éruptions cutanées.

Les symptômes varient-ils selon le virus ?

Oui, chaque virus peut provoquer des symptômes spécifiques selon son type.

Comment les symptômes évoluent-ils ?

Les symptômes peuvent s'aggraver ou s'améliorer selon la réponse immunitaire.

Les symptômes sont-ils toujours présents ?

Non, certains virus peuvent être asymptomatiques chez certaines personnes.

Quels symptômes indiquent une complication ?

Des difficultés respiratoires ou des douleurs thoraciques peuvent signaler des complications.

Comment prévenir les infections virales ?

Se laver les mains, éviter les contacts étroits et se faire vacciner sont essentiels.

Les vaccins sont-ils efficaces contre tous les virus ?

Non, chaque vaccin cible des virus spécifiques et n'offre pas une protection universelle.

Quelles mesures de santé publique aident à prévenir les épidémies ?

La surveillance épidémiologique et la vaccination de masse sont cruciales.

Le port de masque aide-t-il à prévenir les infections ?

Oui, le port de masque réduit la transmission des virus respiratoires.

Les voyages augmentent-ils le risque d'infection virale ?

Oui, les voyages peuvent faciliter la propagation des virus d'une région à une autre.

Quels traitements existent pour les infections virales ?

Les antiviraux, les traitements symptomatiques et les vaccins sont utilisés.

Les antibiotiques sont-ils efficaces contre les virus ?

Non, les antibiotiques ne sont pas efficaces contre les infections virales.

Comment les antiviraux agissent-ils ?

Ils inhibent la réplication virale ou bloquent l'entrée du virus dans les cellules.

Les traitements varient-ils selon le virus ?

Oui, chaque virus peut nécessiter un traitement spécifique adapté.

Les vaccins préviennent-ils toutes les infections virales ?

Non, les vaccins ne couvrent pas tous les virus, mais protègent contre certains.

Quelles sont les complications possibles d'une infection virale ?

Les complications peuvent inclure pneumonie, encéphalite ou défaillance organique.

Comment les complications sont-elles traitées ?

Le traitement dépend de la complication, souvent avec des soins de soutien.

Les complications sont-elles fréquentes ?

Cela dépend du virus et de l'état de santé de l'individu, certaines infections sont plus risquées.

Les personnes âgées sont-elles plus à risque de complications ?

Oui, les personnes âgées ont un risque accru de complications graves lors d'infections virales.

Comment prévenir les complications ?

Un diagnostic précoce et un traitement approprié peuvent réduire le risque de complications.

Quels sont les facteurs de risque d'infection virale ?

Les facteurs incluent l'âge, l'immunodépression et l'exposition à des personnes infectées.

Le mode de vie influence-t-il le risque d'infection ?

Oui, un mode de vie sain peut réduire le risque d'infections virales.

Les maladies chroniques augmentent-elles le risque ?

Oui, les maladies chroniques peuvent affaiblir le système immunitaire et augmenter le risque.

Les voyages à l'étranger augmentent-ils le risque ?

Oui, voyager dans des zones à forte incidence de virus peut accroître le risque d'infection.

Les contacts fréquents avec des malades augmentent-ils le risque ?

Oui, être en contact étroit avec des personnes infectées augmente le risque d'infection.

Génome viral - Informations médicales vérifiées

Performance of VisuALL virtual reality visual field testing in healthy children.

Feb 2024

DOI: 10.1016/j.jaapos.2023.10.004 PMID: 38219921

Virtual reality field testing may provide an alternative to standard automated perimetry. This study evaluates a virtual reality game-based automated perimetry in a healthy pediatric population.... A prospective series of pediatric patients at one institution who performed VisuALL perimetry (Olleyes Inc, Summit, NJ) using a game-based algorithm. Participants were examined by an experienced pedia... A total of 191 eyes of 97 patients (54% female) were included, with a mean age of 11.9 ± 3.1 years. The average MD was -1.82 ± 3.5 dB, with a mean foveal sensitivity of 32.0 ± 4.7 dB. Fifty-nine eyes ... VisuALL virtual reality field testing was well tolerated in this pediatric study cohort. Older age and shorter test duration were associated with better performance on field testing....

Humans Child Female Adolescent Male +5 autres

Comparison of the visual field test of Glaufield Lite with Humphrey Field Analyser.

Feb 2023

DOI: 10.1007/s10792-022-02457-5 PMID: 35947251

To compare visual field test results of Glaufield Lite AP901 CTS 133 (Appasamy Associates, Mannadipet Commune, Thirubhuvanai, Puducherry, India, hereafter Glaufield Lite) with Humphrey Field Analyser ... A pilot study at a tertiary eye centre involving 23 normal and 24 glaucoma patients who underwent two consecutive visual field tests on (i) HFA 24-2 SITA Fast and (ii) Glaufield Lite Quick Central pro... The mean testing time on HFA was significantly shorter than Glaufield Lite (normals: HFA: 2.75 ± 0.49 min, Glaufield Lite: 6.85 ± 0.86 min, p < 0.001; glaucoma patients: HFA: 3.45 ± 1.08 min, Glaufiel... Both perimetric techniques showed reliable test results though test duration was longer with Glaufield Lite perimetry. The MD showed poor agreement, likely due to different scales and principles used ...

Humans Visual Field Tests Visual Fields Reproducibility of Results Pilot Projects +2 autres

Impact of peripapillary retinoschisis on visual field test results in glaucomatous eyes.

09 2023

DOI: 10.1136/bjophthalmol-2021-320509 PMID: 35728936

To investigate the influence of peripapillary retinoschisis (PRS) on visual field (VF) test results in patients with primary open angle glaucoma (POAG).... Thirty eyes of 30 patients with POAG who had PRS at least once were included. All eyes were followed-up for a minimum 5 years at 4-6-month intervals. The occurrence of PRS was determined by circumpapi... Global MD (p=0.345) and regional VF deviations (p=0.255) did not differ significantly between immediately after and just prior to PRS formation. Global MD (p=0.846) and regional VF deviations (p=0.758... PRS has no short-term effect on the VF sensitivity. Therefore, VF test can still be useful for evaluating glaucomatous damage even in the presence of PRS compared with OCT....

Humans Visual Field Tests Optic Disk Glaucoma, Open-Angle Retinoschisis +6 autres

Predicting 60-4 visual field tests using 3D facial reconstruction.

18 12 2023

DOI: 10.1136/bjo-2022-321651 PMID: 36428007

Despite, the potential clinical utility of 60-4 visual fields, they are not frequently used in clinical practice partly, due to the purported impact of facial contour on field defects. The purpose of ... Subjects with no ocular pathology were included. Participants were subject to optical coherence tomography, 60-4 Swedish interactive thresholding algorithm visual field tests and photography. The pred... 30 healthy were enrolled. Three-dimensional facial reconstruction using a convolution neural network (CNN) was able to predict facial contour-dependent 60-4 visual field defects in 30 subjects without... This pilot study reports the development of a CNN-enhanced platform capable of predicting 60-4 visual field defects in healthy controls based on facial contour. Further study with this platform may en...

Humans Visual Field Tests Artificial Intelligence Pilot Projects Visual Fields +5 autres

A new static visual field test algorithm: the Ambient Interactive ZEST (AIZE).

11 09 2023

DOI: 10.1038/s41598-023-42266-z PMID: 37696993

Visual field (VF) test is one of the most vital tests in the diagnosis of glaucoma and to monitor the disease worsening. In the past couple of decades, the standard automated perimetry (SAP) test take...

Humans Computer Simulation Visual Field Tests Algorithms Glaucoma +1 autres

Comparing a head-mounted virtual reality perimeter and the Humphrey Field Analyzer for visual field testing in healthy and glaucoma patients.

Jan 2024

DOI: 10.1111/opo.13229 PMID: 37803502

To compare clinical visual field outputs in glaucoma and healthy patients returned by the Humphrey Field Analyzer (HFA) and virtual reality (Virtual Field, VF) perimetry.... One eye of 54 glaucoma patients and 41 healthy subjects was prospectively tested (three times each in random order) using the HFA and VF perimeters (24-2 test grids). We extracted and compared global ... The VF test was shorter (by 76 s) and had lower fixation losses (by 0.08) and false-positive rate (by 0.01) compared to the HFA (all p < 0.0001). Intraclass correlations were 0.86, 0.82 and 0.47 for M... Virtual Field returns global results that are correlated with the HFA, but pointwise sensitivities were more variable. Differences in test-retest variability and defect detection by its current normat...

Humans Visual Field Tests Visual Fields Sensitivity and Specificity Reproducibility of Results +2 autres

What is the Optimal Frequency of Visual Field Testing to Detect Rapid Progression Among Hypertensive Eyes?

01 09 2023

DOI: 10.1097/IJG.0000000000002260 PMID: 37343189

We evaluated 16,351 visual field (VF) tests from Ocular Hypertension Treatment Study (OHTS) database and showed that more frequent testing resulted in a shorter time to detect glaucoma progression, wi... To investigate the effect of different testing intervals on time to detect visual field progression in eyes with ocular hypertension.... A total of 16,351 reliable 30-2 VF tests from 1575 eyes of the OHTS-1 observation arm with a mean (95% CI) follow-up of 4.8 (4.7-4.8) years were analyzed. Computer simulations (n = 10,000 eyes) based ... At 80% power, based on the progression of -0.42 dB/year, the best trade-off to detect significant rates of VF change to clinically meaningful perimetric loss in high, medium, and low-risk patients was... Given the importance of not missing the conversion to glaucoma, the frequency of testing used in OHTS (6 mo) was optimal for the detection of progression in high-risk patients. Low-risk patients could...

Humans Visual Fields Glaucoma, Open-Angle Intraocular Pressure Tonometry, Ocular +7 autres

Comparison of Visual Field Test Measurements With a Novel Approach on a Wearable Headset to Standard Automated Perimetry.

01 08 2023

DOI: 10.1097/IJG.0000000000002238 PMID: 37311012

This study of inter-test comparability of a novel visual field application installed on an augmented-reality portable headset and Humphrey field analyzer Swedish interactive thresholding algorithm (SI... To determine the correlation between visual field testing with novel software on a wearable headset versus standard automated perimetry.... Patients with and without visual field defects attributable to glaucoma had visual field testing in one eye of each patient with 2 methods: re:Imagine Strategy (Heru, Inc.) and the Humphrey field anal... Measurements from 89 eyes of 89 patients (18 normal and 71 glaucomas) were compared with both instruments. Linear regression analysis demonstrated an excellent Pearson correlation coefficient of r = 0... The Heru visual field test correlated well with SITA Standard in a population of normal eyes and eyes with glaucoma....

Humans Visual Field Tests Intraocular Pressure Visual Fields Glaucoma +4 autres

Visual Fields in Epidemic Retinitis.

Sep 2023

DOI: 10.1080/09273948.2022.2084422 PMID: 35708453

The aim of the study is to analyze visual fields defects (VFDs) in epidemic retinitis (ER).... Patients with ER and Humphrey's visual field (HFA) 30-2 performed after resolution were studied. VFD severity grading was performed. Patients treated with oral doxycycline (Group-A) versus doxycycline... Thirty-five eyes of 25 patients were studied. Nasal, inferior, temporal and central VFD were seen in 19 (54.2%), 13 (37.1%), 7 (20%) and 6 (17.1%) eyes, respectively. Grade 0, 1, 2 and 3 VFDs were see... ER can cause VFD persisting long after resolution. Treatment with oral doxycycline without steroids was non-inferior to combined treatment with respect to VFD....

Humans Visual Fields Doxycycline Scotoma Visual Field Tests +2 autres

Agreement in the detection of chiasmal and postchiasmal visual field defects between imo binocular random single-eye test and Humphrey monocular test.

Sep 2022

DOI: 10.1007/s10384-022-00935-y PMID: 35972588

To compare the ability of imo binocular random single-eye test (BRSET) to detect visual field (VF) defects due to chiasmal and postchiasmal lesions (C/PCLs) with a Humphrey Field Analyzer (HFA) monocu... Prospective multicenter study METHODS: This study enrolled 40 patients with C/PCLs and measured their VFs using both imo BRSET and HFA monocular test. The VFs were classified into three groups using t... The VFs of 34 patients were analyzed and classified. There were 13 patients in the bitemporal, 6 in the homonymous, and 15 in the others group. BRSET showed a significantly shorter test duration than ... BRSET detected VF defects due to C/PCLs as accurately as the HFA monocular test with a shorter test duration....

Humans Prospective Studies Vision Disorders Visual Field Tests Visual Fields

Génome viral : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Gènes viraux

Gènes env

Gènes gag

Gènes précoces

Gènes de particule intracisternale de type A

Gènes nef

Gènes pol

Gènes pX

Gènes rev

Gènes tat

Gènes vif

Gènes vpr

Gènes vpu

Auteurs principaux

Sources (10000 au total)