Clinical comparison of a new swept-source optical coherence tomography–based optical biometer and a time-domain optical coherence tomography–based optical biometer

Srivannaboon, Sabong; Chirapapaisan, Chareenun; Chonpimai, Pratuangsri; Loket, Siriwan

doi:10.1016/j.jcrs.2015.03.019

Cited by 168 publications

(189 citation statements)

References 13 publications

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“…Excellent agreement was detected here between preand post dilation measurements, with similar results to those observed in interoperator repeatability measurements [5].…”

supporting

confidence: 89%

“…Given the established excellent intraobserver repeatability of the IOLMaster 700 © [5], we can assume that the differences observed were attributable to pupil dilation. Notwithstanding, these statistical differences were clinically insignificant since IOL power predictions were unaffected.…”

Section: Discussionmentioning

confidence: 97%

“…In addition, patients with active ocular diseases as well as macular diseases were excluded, so results are not representative of all cataract patients. Finally, the lack of repeatability tests and a control group could be a drawback, though the repeatability of IOLMaster 700 © measurements has been shown to be excellent [5].…”

mentioning

confidence: 99%

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Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Arriola‐Villalobos

Almendral-Gómez

Garzón³

et al. 2016

Journal Français d'Ophtalmologie

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Please cite this article in press as: Arriola-Villalobos P, et al. Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer. J Fr Ophtalmol (2016) Please cite this article in press as: Arriola-Villalobos P, et al. Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer. J Fr Ophtalmol (2016) Procedures. -Eighty-one eyes of 81 patients evaluated for cataract surgery were prospectively examined using the IOLMaster 700 © before and after pupil dilation with tropicamide 1%. The measurements made were: axial length (AL), central corneal thickness (CCT), aqueous chamber depth (ACD), lens thickness (LT), mean keratometry (MK), white-to-white distance (WTW) and pupil diameter (PD). Holladay II and SRK/T formulas were used to calculate IOL power. Agreement between measurement modes (with and without dilation) was assessed through intraclass correlation coefficients (ICC) and Bland-Altman plots. Results. -Mean patient age was 75.17 ± 7.54 years (range: 57-92). Of the variables determined, CCT, ACD, LT and WTW varied significantly according to pupil dilation. Excellent intraobserver correlation was observed between measurements made before and after pupil dilation. Mean IOL power calculation using the Holladay 2 and SRK/T formulas were unmodified by pupil dilation.Conclusions. -The use of pupil dilation produces statistical yet not clinically significant differences in some IOLMaster 700 © measurements. However, it does not affect mean IOL power calculation. © 2016 Elsevier Masson SAS. All rights reserved. MOTS CLÉSCohérence optique swept-source ; Dilatation pupillaire ; Biométrie ; Cataracte ; IOLMaster 700 © Résumé Propos. -Déterminer si la dilatation pupillaire modifie les mesures biométriques et le calcul de la puissance de l'implant intraoculaire obtenus avec un nouveau biomètre optique basé sur la tomographie par cohérence optique swept-source (IOLMaster 700 © ; Carl Zeiss Meditec, Jena, Allemagne) Méthodes. -Nous avons évalué prospectivement 81 yeux de 81 patients prévus pour la chirurgie de la cataracte au moyen du biomètre IOLMaster 700 © , avant et après dilatation pupillaire avec tropicamide 1 %. Les mesures réalisées ont été : longueur axiale (AL), épaisseur cornéenne centrale (CCT), profondeur de la chambre antérieure (épaisseur cornéenne exclue) (ACD), épaisseur cristallinienne (LT), kératométrie moyenne (MK), distance blanc à blanc (WTW) et diamètre pupillaire (PD). Les formules Holladay II et SRK/T ont été employées pour calculer la puissance de l'implant intraoculaire. Nous avons évalué la concordance entre les deux méth-odes de mesure (sous dilatation pupillaire et sans) au moyen des coefficients de corrélation intraclasse (ICC) et des graphiques de Bland-Altman. Résultats. -La moyenne d'âge des patients était de 75,17 ± 7,54 ans (intervalle : 57-92). Parmi les variables mesurées, la CCT,...

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“…Excellent agreement was detected here between preand post dilation measurements, with similar results to those observed in interoperator repeatability measurements [5].…”

supporting

confidence: 89%

Section: Discussionmentioning

confidence: 97%

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Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Arriola‐Villalobos

Almendral-Gómez

Garzón³

et al. 2016

Journal Français d'Ophtalmologie

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“…Therefore, although the acquisition rate was comparable among the three devices in total eye analysis, the differences among the devices in eyes with dense cataract was considered clinically significant. In eyes with a posterior subcapsular cataract (PSC), a reduction in axial length acquisition rate has been reported using time-domain optical coherence biometer [13, 14]. In the present study, 3 eyes with Grade IV nuclear sclerotic cataract accompanied by PSC could not be measured using the OCTB2.…”

Section: Discussionmentioning

confidence: 63%

Clinical Evaluation of a New Swept-Source Optical Coherence Biometer That Uses Individual Refractive Indices to Measure Axial Length in Cataract Patients

et al. 2019

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Backgrounds: Although the OCT biometer using individual refractive index is available, comparisons of measurement value and intraocular lens (IOL) power calculation error with other SS-OCT biometers are not known. Objectives: To compare the new SS-OCT biometer ARGOS (OCTB1), which uses individual refractive indices to measure axial length, with the IOLMaster 700 (OCTB2) and OA-2000 (OLCR), which use equivalent refractive index. Method: Six hundred and twenty-two eyes of 622 patients who had been diagnosed with cataract were enrolled in the study. Among the 158 eyes that had undergone cataract surgery, the postoperative refractive error was evaluated using the Haigis formula. Results: The axial length measured by the OCTB1 showed a proportional bias in comparison with the other two biometers and a fixed bias in eyes with an axial length ≥26 mm. No significant difference was found in the median absolute refractive prediction error (p = 0.3278). However, in eyes with an axial length ≥26 mm, the OCTB1 showed myopic error compared with the other two biometers (p < 0.0001). Conclusions: In eyes with long axial length, when the conventional IOL calculation was optimized with the equivalent refractive index-based instrument, we need to consider that IOL calculation using OCTB1 tends to cause slightly myopic refractive prediction error.

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“…The IOLMaster 700 (Carl Zeiss Meditec AG, Jena), which lately became commercially available, is a swept-source optical biometer to determine keratometry, central corneal thickness (CCT), anterior chamber depth, anterior aqueous depth, lens thickness, horizontal white-to-white corneal diameter, pupil size, and axial length within a single scan [7]. It is widely used for calculating biometric data before cataract surgery.…”

Section: Introductionmentioning

confidence: 99%

Repeatability and Agreement of Central Corneal Thickness and Keratometry Measurements between Four Different Devices

Kiraly¹,

Stange

Kunert

et al. 2017

Journal of Ophthalmology

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Background. To estimate repeatability and comparability of central corneal thickness (CCT) and keratometry measurements obtained by four different devices in healthy eyes. Methods. Fifty-five healthy eyes from 55 volunteers were enrolled in this study. CCT (IOLMaster 700, Pentacam HR, and Cirrus HD-OCT) and keratometry readings (IOLMaster 700, Pentacam HR, and iDesign) were measured. For statistical analysis, the corneal spherocylinder was converted into power vectors (J0, J45). Repeatability was assessed by intraclass correlation coefficient (ICC). Agreement of measurements between the devices was evaluated by the Bland-Altman method. Results. The analysis of repeatability of CCT data of IOLMaster 700, Pentacam HR, and Cirrus HD-OCT showed high ICCs (range 0.995 to 0.999). The comparison of CCT measurements revealed statistically significant differences between Pentacam HR versus IOLMaster 700 (p < 0.0001) and Pentacam HR versus Cirrus HD-OCT (p < 0.0001), respectively. There was no difference in CCT measurements between IOLMaster 700 and Cirrus HD-OCT (p = 0.519). The repeatability of keratometry readings (J0 and J45) of IOLMaster 700, Pentacam HR, and iDesign was also high with ICCs ranging from 0.974 to 0.999. The Pentacam HR revealed significantly higher J0 in comparison to IOLMaster 700 (p = 0.009) and iDesign (p = 0.041); however, no significant difference was between IOLMaster 700 and iDesign (p = 0.426). Comparison of J45 showed no significant difference between IOLMaster 700, Pentacam HR, and iDesign. These results were in accordance with Bland-Altman plots. Conclusion. In clinical practice, the devices analyzed should not be used interchangeably due to low agreement regarding CCT as well as keratometry readings.

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Clinical comparison of a new swept-source optical coherence tomography–based optical biometer and a time-domain optical coherence tomography–based optical biometer

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 168 publications

References 13 publications

Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Effect of pharmacological pupil dilation on measurements and iol power calculation made using the new swept-source optical coherence tomography-based optical biometer

Clinical Evaluation of a New Swept-Source Optical Coherence Biometer That Uses Individual Refractive Indices to Measure Axial Length in Cataract Patients

Repeatability and Agreement of Central Corneal Thickness and Keratometry Measurements between Four Different Devices

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