Ocular biometry and refractive outcomes using two swept-source optical coherence tomography-based biometers with segmental or equivalent refractive indices

Omoto, Miki Kamikawatoko; Torii, Hidemasa; Masui, Sachiko; Ayaki, Masahiko; Ohta, Michio; Negishi, Kazuno

doi:10.1038/s41598-019-42968-3

Cited by 53 publications

(63 citation statements)

References 35 publications

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“…Calculating the IOL powers in highly myopic eyes also remains a challenge that often leads to unexpected postoperative hyperopia. 12,[26][27][28][29][30]56 In eyes with long ALs, both the Holladay 1 and Hoffer Q formulas exhibited a hyperopic trend. Several studies have reported the same result.…”

Section: Accuracy Of Iol Power Calculations Accordingmentioning

confidence: 96%

Ratio of Axial Length to Corneal Radius in Japanese Patients and Accuracy of Intraocular Lens Power Calculation Based on Biometric Data

Omoto

Torii

Hayashi

et al. 2020

American Journal of Ophthalmology

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MIKI KAMIKAWATOKO OMOTO, HIDEMASA TORII, KEN HAYASHI, MASAHIKO AYAKI, KAZUO TSUBOTA, AND KAZUNO NEGISHI PURPOSE: To evaluate the features of the axial lengthto-corneal radius (AL/CR) ratio in Japanese patients with cataracts and to determine the accuracy of intraocular lens (IOL) power calculation formulas according to the AL/CR features and the axial length (AL).DESIGN: Retrospective observational case series. METHODS: Setting was a clinical practice. Patient population was a total of 1,135 eyes (1,135 patients) with cataracts. Observation procedures included measurement of the AL and corenal radius (CR) by optical biometry and evaluation of the refractive outcomes by using the SRK/T, Holladay 1, Hoffer Q, Haigis, and Barrett Universal II formulas. Main outcome measurements were the features of the AL/CR ratio and the accuracy of IOL power calculations based on the AL/CR ratio and the AL.RESULTS: The mean AL/CR ratio was 3.15 ± 0.19. Significant weak negative correlations were observed between the spherical equivalent (SE) and AL (r [ L0.7489; P < .001) and between the SE and AL/CR ratio (r [ L0.8069; P < .001); no correlation was found between the SE and CR (r [ 0.0208, P [ .483). For medium ALs and high AL/CR ratios, the SRK/T formula performed less accurately. For long ALs and high AL/CR ratios, the Holladay 1 and Hoffer Q formulas performed less accurately. The Barrett Universal II formula performed well across a range of ALs and AL/CR ratios. CONCLUSIONS: The AL/CR ratio explained the total variation in the SE better than the AL alone. Surgeons should pay attention to the selection of IOL power calculation formulas in eyes with high AL/CR ratios. (Am J Ophthalmol 2020;-:---. Ó

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Section: Accuracy Of Iol Power Calculations Accordingmentioning

confidence: 96%

Ratio of Axial Length to Corneal Radius in Japanese Patients and Accuracy of Intraocular Lens Power Calculation Based on Biometric Data

Omoto

Torii

Hayashi

et al. 2020

American Journal of Ophthalmology

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“…The other paper reported similar results with the Barrett Universal II and the SRK/T formulas, if the IOLMaster 700 (Zeiss Carl Meditec, Jena, Germany) was used; however, when using the Argos device (Movu, Aichi, Japan), the accuracy of biometry was again higher in the case of Barrett Universal II formula, which draws attention to the potential influencing role of the measuring device. 22…”

Section: Discussionmentioning

confidence: 99%

Accuracy of the Hill–radial basis function method and the Barrett Universal II formula

Németh

Módis

2020

European Journal of Ophthalmology

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Purpose: The aim was to assess the postoperative results of a biometric method using artificial intelligence (Hill–radial basis function 2.0), and data from a modern formula (Barrett Universal II) and the Sanders–Retzlaff–Kraft/Theoretical formula. Methods: Phacoemulsification and biconvex intraocular lens implantation were performed in 186 cataractous eyes. The diopters of intraocular lens were established with the Hill–radial basis function method, based on biometric data obtained using the Aladdin device. The required diopters of the intraocular lens were also calculated by the Barrett Universal II formula and with the Sanders–Retzlaff–Kraft/Theoretical formula. The differences between the manifest postoperative refractive errors and the planned refractive errors were calculated, as well as the percentage of eyes within ±0.5 D of the prediction error. The mean- and the median absolute refractive errors were also determined. Results: The mean age of the patients was 70.13 years (SD = 10.67 years), and the mean axial length was 23.47 mm (range = 20.72–28.78 mm). The percentage of eyes within a prediction error of ±0.5 D was 83.62% using the Hill–radial basis function method, 79.66% with the Barrett Universal II formula, and 74.01% in the case of the Sanders–Retzlaff–Kraft/Theoretical formula. The mean- and the median absolute refractive errors were not statistically different. Conclusion: Clinical success was the highest when using the biometric method, based on pattern recognition. The results obtained using Barrett Universal II came a close second. Both methods performed better compared to a traditionally used formula.

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“…1 In particular, accurate axial length measurements are critical in calculating the correct intraocular lens (IOL) power and the tools for measuring axial length have undergone continuous evolution over the past nearly 20 years. [2][3][4][5][6][7][8] Naturally, as new technology has been introduced to perform biometric measurements, comparisons have been conducted to evaluate accuracy. [9][10][11][12][13][14] This includes the evolution from ultrasound biometry (UBM) to partial coherence interferometry (PCI), 9,15 while more recently, swept-source optical coherence tomography (SS-OCT) has been introduced.…”

Section: Introductionmentioning

confidence: 99%

<p>Comparative Analysis of Swept-Source Optical Coherence Tomography and Partial Coherence Interferometry Biometers in the Prediction of Cataract Surgery Refractive Outcomes</p>

Cummings¹,

Naughton²,

Coen³

et al. 2020

OPTH

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Purpose: To compare the accuracy of pre-operative corneal measurements obtained with four devices, and the refractive outcomes of two optical biometers. Setting: Private practice. Design: Retrospective. Methods: Data taken from biometric measurements on 299 consecutive eyes prior to cataract surgery were retrospectively analyzed using the Argos SS-Optical Biometer and the Lenstar LS900 PCI optical biometer. As part of the standard cataract surgery preoperative exam, patients also underwent placido disk topography and Scheimpflug tomography. Keratometry, anterior chamber depth, corneal diameter, pupil diameter, central corneal thickness and axial length were all measured. The comparable measurements were compared. Finally, for those eyes where cataract surgery was performed, the post-operative refractive results were compared to the predictive results of the two biometers. Results: The SS-OCT Argos was able to measure all eyes, while five eyes could not be measured with the Lenstar LS900 PCI. Axial length measurements were performed only with the Argos and Lenstar devices. The eyes that could not be measured by the Lenstar LS900 PCI included dense grade IV nuclear sclerosis and large posterior subcapsular cataracts. In the primary endpoints, there was strong correlation between the Argos and the Lenstar devices in eyes with an axial length between 20 and 30 mm. Conclusion: The predictive accuracies of the Argos Optical Biometer and Lenstar LS900 PCI are similar, except in medium and long eyes, in which the predictive accuracy of Argos SS-OCT biometry was higher. The Argos system was found easier to use by technicians when compared to the other biometry devices.

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Ocular biometry and refractive outcomes using two swept-source optical coherence tomography-based biometers with segmental or equivalent refractive indices

Cited by 53 publications

References 35 publications

Ratio of Axial Length to Corneal Radius in Japanese Patients and Accuracy of Intraocular Lens Power Calculation Based on Biometric Data

Ratio of Axial Length to Corneal Radius in Japanese Patients and Accuracy of Intraocular Lens Power Calculation Based on Biometric Data

Accuracy of the Hill–radial basis function method and the Barrett Universal II formula

<p>Comparative Analysis of Swept-Source Optical Coherence Tomography and Partial Coherence Interferometry Biometers in the Prediction of Cataract Surgery Refractive Outcomes</p>

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