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Descripteurs (mots clés)
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Analyse appariée
A type of analysis in which subjects in a study group and a comparison group are made comparable with respect to extraneous factors by individually pairing study subjects with the comparison group subjects (e.g., age-matched controls).
Synonyme(s)
Analyse de données issues de comparaisons par paires; Analyse par appariement; Analyse par comparaisons par paires; Analyse par paires; Comparaisons par paires; Comparaisons appariéesRelation(s)
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A Comparison between Automated Subjective Refraction and Traditional Subjective Refraction in Keratoconus Patients / Gonzalo Carracedo in OVS : Optometry & Vision Science, vol. 98, 06 (Juin 2012)
[article]
in OVS : Optometry & Vision Science > vol. 98, 06 (Juin 2012)
Titre : A Comparison between Automated Subjective Refraction and Traditional Subjective Refraction in Keratoconus Patients Type de document : article de périodique Auteurs : Gonzalo Carracedo ; Carlos Carpena-Torres ; Cristina Pastrana ; Ana Privado-Aroco ; Maria Serramito-Blanco ; Teresa MarÃa Espinosa-Vidal ; MarÃa RodrÃguez-Lafor Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Aberrométrie
[Thésaurus Mesh]Analyse appariée
[Thésaurus Mesh]Kératocône
[Thésaurus Mesh]Réfraction oculaireRésumé : SIGNIFICANCE: The performance of the Eye Refract (Luneau Technology, Chartres, France), a new instrument to perform aberrometry-based automated subjective refraction, has been previously evaluated in healthy subjects. However, its clinical implications in other ocular conditions are still unknown. PURPOSE: The purpose of this study was to evaluate the agreement between the Eye Refract and the traditional subjective refraction, as the criterion standard, in keratoconus patients with and without intracorneal ring segments (ICRSs). METHODS: A total of 50 eyes of 50 keratoconus patients were evaluated, dividing the sample into 2 groups: 27 eyes without ICRS (37.78 ± 9.35 years) and 23 eyes with ICRS (39.26 ± 13.62 years). An optometrist conducted the refraction with the Eye Refract, and another different optometrist conducted the traditional subjective refraction on the same day. Spherical equivalent (M), cylindrical vectors (J0 and J45), and corrected distance visual acuity were compared between both methods of refraction. In addition, Bland-Altman analysis was performed to assess the agreement between both methods of refraction. RESULTS: There were no statistically significant differences (P ≥ .05) between the Eye Refract and the traditional subjective refraction for all the variables under study in either group. Without ICRS, the mean difference and 95% limits of agreement (upper, lower) were −0.20 (+1.50, −1.89) D for M, −0.14 (+1.40, −1.68) D for J0, and +0.05 (+1.23, −1.14) D for J45. With ICRS, these values worsened to −0.62 (+3.89, −5.12) D for M, +0.06 (+2.46, −2.34) D for J0, and −0.02 (+2.23, −2.28) D for J45. CONCLUSIONS: The Eye Refract seems to offer similar results compared with the traditional subjective refraction in keratoconus patients not implanted with ICRS. However, some patients could show abnormal measurements, especially those with ICRS, who should be treated with caution in clinical practice. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Comparison of Dynamic Retinoscopy and Autorefraction for Measurement of Accommodative Amplitude / Rami Aboumourad in OVS : Optometry & Vision Science, vol. 96, 09 (Septembre 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 09 (Septembre 2019)
Titre : Comparison of Dynamic Retinoscopy and Autorefraction for Measurement of Accommodative Amplitude Type de document : article de périodique Auteurs : Rami Aboumourad ; Heather Anderson Année de publication : 2019 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Accommodation oculaire
[Thésaurus Mesh]Analyse appariée
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Rétinoscopie
[Thésaurus Mesh]Tests de vision
[Thésaurus HELB]:Optique:amplitude d'accommodationRésumé : SIGNIFICANCE: This study promotes the use of dynamic retinoscopy to obtain objective measures of accommodative amplitude (AA) in the clinical setting in lieu of the subjective push-up technique. PURPOSE: This study compared the agreement between open-field autorefraction and a modified dynamic retinoscopy for the objective measurement of AA. METHODS: Accommodative amplitude was measured using two objective techniques for subjects aged 5 to 60 years. Test order was randomized and monocular AA was measured as subjects viewed printed letters 0.9 mm in height with their dominant eye and distance refraction. For retinoscopy, subjects held a near rod and viewed the target at the nearest (most proximal) point of clear vision. The examiner then performed dynamic retinoscopy along the horizontal meridian and identified the physical location of neutrality of the reflex, which was converted to AA in diopters. Autorefraction was performed obtaining repeated measures of refraction beginning from a target demand of 2.5 D and increasing in discrete steps until there was no subsequent increase in accommodative response. Refractions were converted to power in the horizontal meridian and expressed as accommodation in diopters with the maximal value termed the AA. Distance overrefractions were measured for both techniques to adjust AA for any uncorrected refractive error. Difference versus mean analysis was used to compare agreement between tests. RESULTS: The 95% limits of agreement between techniques were calculated after removal of two young outliers who responded poorly to one of the techniques. The overall mean difference for 95 subjects was 0.02 ± 0.97 D, with limits of agreement spanning −1.87 to 1.92 D. No significant linear relationship between the magnitude of the AA and the differences between techniques was observed. CONCLUSIONS: Agreement between dynamic retinoscopy and open-field autorefraction was less than 2 D with no systematic bias, suggesting that dynamic retinoscopy may be a suitable clinical technique to measure objective AA. Note de contenu :
Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
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