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Détail de l'auteur
Auteur Michael Twa
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la rechercheAccuracy and Repeatability of Internet-ordered Spectacle Lenses / Adam Gordon in OVS : Optometry & Vision Science, vol. 98,12 (Décembre 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98,12 (Décembre 2021)
Titre : Accuracy and Repeatability of Internet-ordered Spectacle Lenses Type de document : article de périodique Auteurs : Adam Gordon ; Michael Twa ; Gary Cutter ; Robert N. Kleinstein Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Optique:ophtalmologistes
[Thésaurus HELB]:Optique:optométristes
[Thésaurus HELB]:Paramédical:QUALITÉ
[Thésaurus HELB]Optique
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Contrôle de qualité
[Thésaurus Mesh]Internet
[Thésaurus Mesh]Lunettes correctrices
[Thésaurus Mesh]Normes de référence
[Thésaurus Mesh]Sécurité
[Thésaurus Mesh]VerreMots-clés : vente en ligne Résumé : SIGNIFICANCE
Both consumers and eye care practitioners need to know how well online optical vendors conform with the accepted standards for quality and safety. We found that almost 1 in 10 prescriptions failed to meet national standards, which is a significant improvement over previous studies.
PURPOSE
The purpose of this study was to assess the accuracy and repeatability of spectacle lens prescriptions ordered from a sample of online vendors.
METHODS
Spectacle lens prescriptions were ordered by paid participants with no optical training who were masked to the study objectives. The prescription powers ordered (sphere, cylinder, and axis) were statistically sampled from 1000 previously filled prescriptions. A total of 100 orders were placed with each of three online vendors that included a range of high- and low-powered single vision lenses and progressive addition lenses, and duplicate orders to assess repeatability. An independent certified testing laboratory was contracted to assess conformance with voluntary consensus standards (ANSI Z80.1-2015) and Food and Drug Administration drop-ball safety testing. Lenses not meeting these standards were counted as failures.
RESULTS
The overall failure rates for the three vendors were 11.2 ± 3.2% (vendor A), 8.0 ± 2.7% (vendor B), and 8.2 ± 2.8% (vendor C). The repeatability for 20 prescriptions ordered five times from each vendor was high, with correlation coefficients greater than 90%. There were no observed lens impact failures.
CONCLUSIONS
Almost 1 in 10 spectacle lens prescriptions ordered from three online vendors failed to meet national standards for optical quality. Additional studies are needed to assess eyewear ordered online for other important patient-specific variables that can influence visual performance and ultimate acceptability of prescription eyewear, such as lens placement relative to the visual axis, frame fit, and cosmetic acceptability.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire COVID-19 Pandemic-driven Innovations in Optometric Education / Michael Twa in OVS : Optometry & Vision Science, vol. 97, 10 (Octobre 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 10 (Octobre 2020)
Titre : COVID-19 Pandemic-driven Innovations in Optometric Education Type de document : article de périodique Auteurs : Michael Twa Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Paramédical:Crise sanitaire
[Thésaurus Mesh]Confinement de risques biologiques
[Thésaurus Mesh]COVID-19
[Thésaurus Mesh]Étudiants
[Thésaurus Mesh]Lutte contre l'infection
[Thésaurus Mesh]OptométriePermalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Evidence-based Clinical Practice: The Role for Professional Societies / Michael Twa in OVS : Optometry & Vision Science, vol. 97, 01 (Janvier 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 01 (Janvier 2020)
Titre : Evidence-based Clinical Practice: The Role for Professional Societies Type de document : article de périodique Auteurs : Michael Twa, Auteur Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Optométrie
[Thésaurus Mesh]Pratique factuelleMots-clés : Evidence-Based practice optometry Résumé : The positive effects of implementing evidence-based clinical practices are well accepted and include better patient outcomes, reduced disability, and lower health care costs to name a few.1 However, it can be difficult for individuals, clinics, institutions, and professions to embrace and ultimately to implement evidence-based clinical practices. The central challenge to address is the difficult problem of changing culture and human behavior. Given that it is beneficial to practice according to evidence-based standards, why is there not a wider use of evidence-based practices, and how can a profession leverage the available resources within the community to encourage change and more widespread adoption? Moreover, what can professional societies do to support the creation, understanding, and use of evidence-based clinical practice standards? Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Evidence-based Reviews: Systematic Reviews and Meta-analyses / Michael Twa in OVS : Optometry & Vision Science, vol. 99, 01 (Janvier 2022)
[article]
in OVS : Optometry & Vision Science > vol. 99, 01 (Janvier 2022)
Titre : Evidence-based Reviews: Systematic Reviews and Meta-analyses Type de document : article de périodique Auteurs : Michael Twa Année de publication : 2022 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Ouvrages de référence:recherche
[Thésaurus HELB]:Paramédical:littérature scientifique
[Thésaurus HELB]:Paramédical:Revue professionnelle
[Thésaurus Mesh]Essai clinique
[Thésaurus Mesh]Médecine factuelle
[Thésaurus Mesh]Optométrie
[Thésaurus Type de publication]Revue de la littératureMots-clés : revues systématiques méta-analyses Médecine fondée sur des faits COCHRANE Résumé : In October 2021, the American Academy of Optometry held their first live annual meeting since the onset of the COVID-19 pandemic. It was a welcomed event in many ways. It signaled the return of more normal times, it brought friends and colleagues together, and it was a chance to share ideas, scientific advances, and best clinical practices—it was the fellowship that many of us had been missing for the last few years, and it was a success[...] Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire In Vivo Human Corneal Shear-wave Optical Coherence Elastography / Gongpu Lan in OVS : Optometry & Vision Science, vol. 98, 01 (Janvier 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 01 (Janvier 2021)
Titre : In Vivo Human Corneal Shear-wave Optical Coherence Elastography Type de document : article de périodique Auteurs : Gongpu Lan ; Salavat R. Aglyamov ; Kirill V. Larin ; Michael Twa Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Paramédical:biomécanique
[Thésaurus HELB]:Paramédical:Nouvelles technologies
[Thésaurus Mesh]:M:Maladies de l'oeil:Maladies de l'oeil / diagnostic
[Thésaurus Mesh]Calculs
[Thésaurus Mesh]Cornée
[Thésaurus Mesh]Diagnostic par imagerieMots-clés : élastographie dynamique à cohérence optique Résumé : SIGNIFICANCE: A novel imaging technology, dynamic optical coherence elastography (OCE), was adapted for clinical noninvasive measurements of corneal biomechanics. PURPOSE: Determining corneal biomechanical properties is a long-standing challenge. Elasticity imaging methods have recently been developed and applied for clinical evaluation of soft tissues in cancer detection, atherosclerotic plaque evaluation, surgical guidance, and more. Here, we describe the use of dynamic OCE to characterize mechanical wave propagation in the human cornea in vivo, thus providing a method for clinical determination of corneal biomechanical properties. METHODS: High-resolution phase-sensitive optical coherence tomography imaging was combined with microliter air-pulse tissue stimulation to perform dynamic elasticity measurements in 18 eyes of nine participants. Low-pressure (0.1 mmHg), spatiotemporally discreet (150 μm, 800 μs) tissue stimulation produced submicron-scale tissue deformations that were measured at multiple positions over a 1-mm2 area. Surface wave velocity was measured and used to determine tissue stiffness. Elastic wave propagation velocity was measured and evaluated as a function of IOP and central corneal thickness. RESULTS: Submicron corneal surface displacement amplitude (range, 0.005 to 0.5 μm) responses were measured with high sensitivity (0.24 nm). Corneal elastic wave velocity ranged from 2.4 to 4.2 m/s (mean, 3.5; 95% confidence interval, 3.2 to 3.8 m/s) and was correlated with central corneal thickness (r = 0.64, P < .001) and IOP (r = 0.52, P = .02). CONCLUSIONS: Phase-sensitive optical coherence tomography imaging combined with microliter air-pulse mechanical tissue stimulation has sufficient detection sensitivity to observe submicron elastic wave propagation in corneal tissue. These measurements enable in vivo corneal stiffness determinations that will be further studied for use with disease detection and for monitoring clinical interventions. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Optometry and Vision Science 2019 Year-end Review / Michael Twa in OVS : Optometry & Vision Science, vol. 96, 12 (Décembre 2019)
PermalinkPatient and Provider Perspectives on Glaucoma Treatment Adherence: A Delphi Study in Urban Alabama / Shervonne Poleon in OVS : Optometry & Vision Science, vol. 98, 09 (Septembre 2021)
PermalinkRevised Graphical Standards: A Quiz / Michael Twa in OVS : Optometry & Vision Science, vol. 97, 06 (Juin 2020)
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