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Longueur axiale de l'oeil
The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.
Synonyme(s)
Longueur axiale oculaireRelation(s)
- voir aussi au terme générique : [Descripteurs (mots clés)] Oeil
- voir aussi au terme générique : [Descripteurs (mots clés)] Taille d'organe
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Comparison of Three Different Devices for the Evaluation of Axial Length, Refractive Error, and Keratometry / Philipp Hessler in OVS : Optometry & Vision Science, vol. 100, 08 (Aout 2023)
[article]
in OVS : Optometry & Vision Science > vol. 100, 08 (Aout 2023)
Titre : Comparison of Three Different Devices for the Evaluation of Axial Length, Refractive Error, and Keratometry Type de document : article de périodique Auteurs : Philipp Hessler ; Peter Künzel ; Stephan Degle Année de publication : 2023 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Electronique:appareillage de mesure
[Thésaurus HELB]:Paramédical:kératométrie
[Thésaurus HELB]:Paramédical:outils de dépistage
[Thésaurus Mesh]Étude comparative
[Thésaurus Mesh]Longueur axiale de l'oeil
[Thésaurus Mesh]Myopie
[Thésaurus Mesh]Prévalence
[Thésaurus Mesh]Réfraction oculaireRésumé : SIGNIFICANCE
Myopia prevalence is increasing worldwide. Axial length, refractive error, and keratometry are important outcome measures in myopia management. Precise measurement methods are required for myopia management. Various devices are used to measure these three parameters, and it is not known whether their results can be used interchangeably.
PURPOSE
The aim of this study was to compare three different devices to evaluate axial length, refractive error, and keratometry.
METHODS
A total of 120 subjects (37.7 ± 15.5 years) were enrolled in this prospective study. All subjects were measured with DNEye Scanner 2 (Rodenstock GmbH, Munich, Germany), Myopia Master (Oculus Optikgeräte GmbH, Wetzlar, Germany), and IOLMaster 700 (Carl Zeiss Meditec AG, Jena, Germany). Myopia Master and IOLMaster 700 use interferometry to measure axial length. Rodenstock Consulting software (Rodenstock GmbH, Munich, Germany) was used to calculate axial length from DNEye Scanner 2 measurement. Differences were analyzed using Bland-Altman 95% limits of agreement.
RESULTS
Differences for axial length were as follows: DNEye Scanner 2 versus Myopia Master, 0.67 ± 0.46 mm; DNEye Scanner 2 versus IOLMaster 700, 0.64 ± 0.46 mm; and Myopia Master versus IOLMaster 700, −0.02 ± 0.02 mm. Differences for mean corneal curvature were as follows: DNEye Scanner 2 versus Myopia Master, −0.20 ± 0.36 mm; DNEye Scanner 2 versus IOLMaster 700, −0.40 ± 0.35 mm; and Myopia Master versus IOLMaster 700, −0.20 ± 0.13 mm. The difference in noncycloplegic spherical equivalent between DNEye Scanner 2 and Myopia Master was 0.05 ± 0.25 D.
CONCLUSIONS
The results for axial length and keratometry from Myopia Master and IOLMaster were comparable. The axial length calculated by DNEye Scanner 2 was significantly different from interferometry devices and is not appropriate for myopia management. The differences in keratometry readings were clinically not significant. All refractive outcomes were comparable.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Efficacy of Swept-source Optical Coherence Tomography in Axial Length Measurement for Advanced Cataract Patients / Chareenun Chirapapaisan in OVS : Optometry & Vision Science, vol. 97, 03 (mars 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 03 (mars 2020)
Titre : Efficacy of Swept-source Optical Coherence Tomography in Axial Length Measurement for Advanced Cataract Patients Type de document : article de périodique Auteurs : Chareenun Chirapapaisan ; Sabong Srivannaboon ; Pratuangsri Chonpimai Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Cataracte
[Thésaurus Mesh]Longueur axiale de l'oeil
[Thésaurus Mesh]Tomographie par cohérence optiqueRésumé : SIGNIFICANCE: A major limitation of standard time-domain optical coherence tomography–based biometers (TD-OCT) is an inability to measure the axial length (AL) in advanced cataract. A new device that uses swept-source optical coherence tomography (SS-OCT) allows better light penetration. Hence, a considerable number of cataract patients who failed AL measurement by TD-OCT can be recovered by SS-OCT. PURPOSE: The purposes of this study were to evaluate the efficacy of an SS-OCT for AL measurement in advanced cataract patients and to identify characteristics of lens opacity that impede the AL measurement. METHODS: Advanced cataract patients who were unable to obtain AL measurement using a standard TD-OCTbased optical biometer (IOLMaster500; Carl Zeiss Meditec, Jena, Germany) were recruited in this study. The AL was remeasured using SS-OCT (IOLMaster700), followed by measurement with immersion ultrasonography (IU). The percentage of patients who achieved AL measurement by SS-OCT was recorded. The AL obtained from SS-OCT was then verified by comparing with the AL derived from IU. The cataract type of each patient was classified according to standard Lens Opacity Classification III score. The association between characteristics of cataract and successful AL measurement by SS-OCT was analyzed. RESULTS: Sixty-four eyes that failed AL measurement from TD-OCT were included. Fifty-six eyes (87.5%) were able to be measured by SS-OCT (95% confidence interval, 77.23 to 93.53%). The AL obtained by SS-OCT showed very high agreement with those derived from IU (intraclass correlation coefficient, 0.99). There was no statistically significant correlation between characteristics of lens opacity and the capability of SS-OCT for AL measurement (P > .05). However, there was a trend toward an inability to measure the AL in cataracts with a high grade of lens opacity. CONCLUSIONS: The efficacy of SS-OCT–based optical biometer was excellent. Of the patients with advanced cataract who failed the AL measurement by TD-OCT, 87.5% could be recovered by SS-OCT. However, there was no specific type of lens opacity associated with a failure of AL measurement using SS-OCT. En ligne : https://journals.lww.com/optvissci/Fulltext/2020/03000/Efficacy_of_Swept_source_ [...] Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Retrospective Analysis of Axial Length Changes in Overnight Orthokeratology in an Academic Myopia Control Clinic / Michelle Holmes in OVS : Optometry & Vision Science, vol. 100, 09 (Septembre 2023)
[article]
in OVS : Optometry & Vision Science > vol. 100, 09 (Septembre 2023)
Titre : Retrospective Analysis of Axial Length Changes in Overnight Orthokeratology in an Academic Myopia Control Clinic Type de document : article de périodique Auteurs : Michelle Holmes ; Sarah Singh ; Maria Liu Année de publication : 2023 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]:M:Myopie:Myopie / prévention et contrôle
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Longueur axiale de l'oeil
[Thésaurus Mesh]Statistiques
[Thésaurus HELB]:Optique:orthokératologieMots-clés : lentilles d’orthokératologie Résumé : SIGNIFICANCE: Although the myopia control efficacy of orthokeratology lenses has been established with clinical trials, reports of axial length change in non–study-based patient care are scarce. This study investigates the use of orthokeratology lenses for myopia control in a clinical population and compares axial elongation against those published in recent clinical investigations. PURPOSE: This study aimed to investigate factors affecting axial elongation during use of orthokeratology lenses for myopia control in an academic clinical setting. METHODS: This study was a retrospective consecutive case series from the Myopia Control Clinic at the Herbert Wertheim School of Optometry at the University of California, Berkeley (Berkeley, CA). Patients ranging from 5 to 18 years old using orthokeratology for at least 1 year were included in the study. Data from 102 patients' eyes were analyzed at baseline (before the initiation of treatment) and after 1 year of wear (12 ± 3 months). Multivariate analysis was undertaken to identify factors significantly associated with axial elongation over this period. RESULTS: Mean (±standard deviation) spherical equivalent refraction and axial length at baseline were −2.54 (±1.21) D and 24.53 (±0.82) mm, respectively. By the 1-year follow-up, eyes had shown significant axial elongation (0.18 ± 0.24 mm; P < .001), which was found to be inversely correlated with age (P < .001). Race, sex, baseline axial length, and baseline refraction were not significantly associated with axial elongation. CONCLUSIONS: Factors influencing axial length and the magnitude of axial elongation in our orthokeratology patient population are consistent with orthokeratology treatment groups from published randomized clinical trials and support the use of these lenses for myopia control in a clinical practice setting. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
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