A partir de cette page vous pouvez :
Retourner au premier écran avec les dernières notices... |
Détail de l'auteur
Auteur Mark Rosenfield
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la rechercheAstigmatisme non corrigé et syndrome visuel d’ordinateur / Mark Rosenfield in LRO : La Revue d'Optométrie et de contactologie, 40 (Janvier 2012)
[article]
in LRO : La Revue d'Optométrie et de contactologie > 40 (Janvier 2012) . - 40-41
Titre : Astigmatisme non corrigé et syndrome visuel d’ordinateur Type de document : article de périodique Auteurs : Mark Rosenfield, Auteur Article en page(s) : 40-41 Descripteurs (mots clés) : [Thésaurus HELB]:Paramédical:Syndrome visuel d’ordinateur
[Thésaurus Mesh]Astigmatisme
[Thésaurus Mesh]Ordinateurs
[Thésaurus Mesh]Photophobie
[Thésaurus Mesh]Troubles de la visionMots-clés : Syndrome visuel d’ordinateur Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité Périodique Erasme - périodiques Périodiques Disponible Blue-blocking Filters and Digital Eyestrain / Tatsiana Palavets in OVS : Optometry & Vision Science, vol. 96, 01 (Janvier 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 01 (Janvier 2019)
Titre : Blue-blocking Filters and Digital Eyestrain Type de document : article de périodique Auteurs : Tatsiana Palavets ; Mark Rosenfield Année de publication : 2019 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Optique:filtres optiques
[Thésaurus HELB]:Optique:Lumière bleue / optique
[Thésaurus HELB]:Paramédical:écrans et santé
[Thésaurus HELB]:Paramédical:Tablette numérique
[Thésaurus Mesh]:A:Asthénopie:Asthénopie / thérapie
[Thésaurus Mesh]Collecte de donnéesRésumé : SIGNIFICANCE Many manufacturers are currently marketing blue-blocking (BB) filters, which they claim will reduce the symptoms of digital eyestrain (DES). However, there is limited evidence to support the proposal that DES results from the blue light emitted by these devices.
PURPOSE The visual and ocular symptoms commonly experienced when viewing digital screens are collectively termed DES. The emission spectrum of modern digital displays frequently includes a high percentage of blue light. Being higher in energy, these short wavelengths may contribute to DES. This study examined the effect of a BB filter on symptoms of DES during a sustained near-vision task.
METHODS Twenty-three young, visually normal subjects were required to perform a 30-minute reading task from a tablet computer. The digital screen was overlaid with either a BB or neutral-density (ND) filter producing equal screen luminance. During each session, the accommodative response, pupil diameter, and vertical palpebral aperture dimension were measured at 0, 9, 19, and 29 minutes after the start of the reading task. Immediately following each session, subjects completed a questionnaire to quantify symptoms of DES.
RESULTS The BB filter blocked 99% of the wavelengths between 400 and 500 nm. The mean total symptom scores (±1 SEM) for the BB and ND filter conditions were 42.83 (3.58) and 42.61 (3.17), respectively (P = .62). No significant differences in accommodation or vertical palpebral aperture dimension were observed between the two filter conditions, although the magnitude of the mean accommodative response did increase significantly during the first 9 minutes of the task (P = .02).
CONCLUSIONS A filter that eliminated 99% of the emitted blue light was no more effective at reducing symptoms of DES than an equiluminant ND filter. There is little evidence at this time to support the use of BB filters to minimize near work–induced asthenopia.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Digital Eyestrain and the Critical Fusion Frequency / Keying Yan in OVS : Optometry & Vision Science, vol.99, 03 (Mars 2022)
[article]
in OVS : Optometry & Vision Science > vol.99, 03 (Mars 2022)
Titre : Digital Eyestrain and the Critical Fusion Frequency Type de document : article de périodique Auteurs : Keying Yan ; Mark Rosenfield Année de publication : 2022 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Acuité visuelle
[Thésaurus Mesh]Asthénopie
[Thésaurus HELB]:Paramédical:écrans numériquesMots-clés : changements de fréquence de fusion critique Résumé : SIGNIFICANCE
Although the high prevalence of digital eyestrain has been well established, to date, there is no objective measurement of this condition. Previous studies have suggested that digital eyestrain may be associated with decreased critical fusion frequency, but the published evidence to support this association is sparse.
PURPOSE
This study sought to determine whether symptoms of digital eyestrain after a sustained computer task are indeed associated with changes in critical fusion frequency.
METHODS
The experiment was performed on 30 young visual-normal subjects. They attended two sessions, during which they undertook a 20-minute reading task. This comprised either reading random words from a tablet computer or a story from a printed children's book. Critical fusion frequency was measured both before and immediately after each of the reading tasks. In addition, the level of digital eyestrain was assessed by subjects completing a questionnaire regarding ocular and visual symptoms experienced during each of the reading trials.
RESULTS
The mean increase in digital eyestrain symptoms after the digital and printed conditions was 11.37 (standard error of the mean [SEM], 2.23) and 4.40 (SEM, 1.34), respectively. Both the post-task symptom change (P < .001) and the difference between the two reading conditions (P = .004) were significant. The mean change in critical fusion frequency after the digital and printed conditions was −0.42 (SEM, 0.25) and −0.72 (SEM, 0.26), respectively. Neither the post-task change nor the difference between the two reading conditions was significant. In addition, when considering the digital condition only, no significant correlation was observed between the changes in critical fusion frequency and reported symptoms.
CONCLUSIONS
These results do not support the proposal that changes in critical fusion frequency can be used as an objective measure of eyestrain or other symptoms of digital eyestrain.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Objective and subjective assessment of accommodative insufficiency / Alejandro León in OVS : Optometry & Vision Science, vol. 101, 01 (Janvier 2024)
[article]
in OVS : Optometry & Vision Science > vol. 101, 01 (Janvier 2024)
Titre : Objective and subjective assessment of accommodative insufficiency Type de document : article de périodique Auteurs : Alejandro León ; Mark Rosenfield ; Sandra Milena Medrano ; Sandra Carolina Durán ; Carol Violet Pinzón Année de publication : 2024 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Accommodation oculaire
[Thésaurus Mesh]Diagnostic
[Thésaurus Mesh]Rétinoscopie
[Thésaurus HELB]:Optique:amplitude d'accommodationMots-clés : insuffisance accommodative calcul rétinoscopie dynamique objective Résumé : SIGNIFICANCE: A variety of subjective and objective procedures are available to measure the amplitude of accommodation. However, it is unclear whether the standard criterion of Hofstetter's minimum minus 2D can be used to diagnose accommodative insufficiency with each of these techniques.
PURPOSE: The use of objective dynamic retinoscopy and three subjective techniques to diagnosis accommodative insufficiency was examined. METHODS: A total of 632 subjects between 8 and 19years of agewere enrolled.
Accommodative lag, monocular accommodative facility, and subjective (push-up,modified push-down, andminus lens) and objective (dynamic retinoscopy) amplitude of accommodation were quantified. Accommodative insufficiency was diagnosed based on Hofstetter's minimum minus 2 D for each subjective method, as well as adding an additional subjective criterion
(either accommodative lag exceeding 0.75D or monocular accommodative facility falling below the age-expected norms).
RESULTS: The prevalence of accommodative insufficiency was lowest and highest with the push-up (7.9 and 1%) and dynamic retinoscopy (94 and 12%) procedures when measured without and with the additional subjective criteria, respectively. Comparing the validity of dynamic retinoscopy against the traditional criterion, moderate to low sensitivity and high specificity were found. However, adding the additional subjective criteria improved the findings with moderate to high sensitivity and high specificity.
Using a cutoff for dynamic retinoscopy of 7.50D showedmoderate diagnostic accuracy based on likelihood ratios.
CONCLUSIONS: It is clear that a revised definition of accommodative insufficiency is required, which must include the method of assessing accommodation.
The various objective and subjective methods for quantifying the amplitude of accommodation are not interchangeable, and subjective assessment does not provide a valid measure of the accommodative response.
Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire