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Détail de l'auteur
Auteur Robert N. Kleinstein
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 Uncorrected Refractive Error and Distance Visual Acuity in Children Aged 6 to 14 Years / Robert N. Kleinstein in OVS : Optometry & Vision Science, vol. 98, 01 (Janvier 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 01 (Janvier 2021)
Titre : Uncorrected Refractive Error and Distance Visual Acuity in Children Aged 6 to 14 Years Type de document : article de périodique Auteurs : Robert N. Kleinstein ; Donald Mutti ; Loraine T. Sinnott ; Lisa Jones-Jordan ; Susan A. Cotter ; Ruth E. Manny ; Daniel Twelker ; Karla Zadnik Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Acuité visuelle
[Thésaurus Mesh]Calculs
[Thésaurus Mesh]Enfant
[Thésaurus Mesh]Troubles de la réfraction oculaireMots-clés : erreur de réfraction autoréfracteur distance Résumé : SIGNIFICANCE: This study presents the relationship between distance visual acuity and a range of uncorrected refractive errors, a complex association that is fundamental to clinical eye care and the identification of children needing refractive correction. PURPOSE: This study aimed to analyze data from the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error Study to describe the relationship between distance uncorrected refractive error and visual acuity in children. METHODS: Subjects were 2212 children (51.2% female) 6 to 14 years of age (mean ± standard deviation, 10.2 ± 2.1 years) participating in the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error Study between 2000 and 2010. Uncorrected distance visual acuity was measured using a high-contrast projected logMAR chart. Cycloplegic refractive error was measured using the Grand Seiko WR-5100K autorefractor. The ability of logMAR acuity to detect various categories of refractive error was examined using receiver operating characteristic curves. RESULTS: Isoacuity curves show that increasing myopic spherical refractive errors, increasing astigmatic refractive errors, or a combination of both reduces distance visual acuity. Visual acuity was reduced by approximately 0.5 minutes of MAR per 0.30 to 0.40 D of spherical refractive error and by approximately 0.5 minutes of MAR per 0.60 to 0.90 D of astigmatism. Higher uncorrected hyperopic refractive error had little effect on distance visual acuity. Receiver operating characteristic curve analysis suggests that a logMAR distance acuity of 0.20 to 0.32 provides the best balance between sensitivity and specificity for detecting refractive errors other than hyperopia. Distance acuity alone was ineffective for detecting hyperopic refractive errors. CONCLUSIONS: Higher myopic and/or astigmatic refractive errors were associated with predictable reductions in uncorrected distance visual acuity. The reduction in acuity per diopter of cylindrical error was about half that for spherical myopic error. Although distance acuity may be a useful adjunct to the detection of myopic spherocylindrical refractive errors, accommodation presumably prevents acuity from assisting in the detection of hyperopia. Alternate procedures need to be used to detect hyperopia Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire