Displacement between anterior chamber width obtained by swept-source anterior segment optical coherence tomography and white-to-white distance

Taechameekietichai, Teerajet; Nguyen, Anwell; Chansangpetch, Sunee; Lin, Shan

doi:10.1371/journal.pone.0251990

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…Taechameekietichai et al used SS-OCT to measure the ATA and STS, and LenStar LS 900 optical biometer to measure the WTW. They showed a significant correlation between WTW, ATA, and STS, and reported that the larger the WTW, the greater the difference between the WTW and the STS [ 21 ]. However, in this previous study, only comparative analysis of WTW, ATA, and STS, which correspond to the horizontal meridian, was performed, and the analysis was not performed separately by refractive error.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of angle-to-angle and spur-to-spur using swept source optical coherence tomography in different refractive error

Yun

Min²,

Kim³

2022

PLoS ONE

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Purpose To measure angle-to-angle (ATA) and spur-to-spur (STS) distances along six meridians using swept-source optical coherence tomography (SS-OCT) and compare with horizontal white-to-white (WTW) distance in different refractive error. Methods Overall, 126 eyes were assessed with the Anterion SS-OCT (Heidelberg Engineering, Heidelberg, Germany). ATA and STS distances were obtained using SS-OCT at 0, 30, 60, 90, 120, and 150 degrees. WTW was measured at 0 degree with built-in infrared camera. One way ANOVA test, pearson correlation coefficient, and stepwise multivariate regression analysis were used to compare ATA and STS distances with age, anterior chamber depth (ACD), axial length (AL), and simulated keratometric values (Sim K) in different refractive error groups. Results The mean MRSE refraction was +0.05 ± 0.23 D in the emmetropic group (41 eyes), -3.42 ± 3.04 D in the myopic group (44 eyes), and +1.33 ± 0.64 D in the hyperopic group (31 eyes). There was no statistical difference in the WTW of the emmetropic (11.62 ± 0.44 mm), myopic (11.79 ± 0.46 mm), and hyperopic groups (11.80 ± 0.49 mm) using one-way ANOVA (p = 0.007). ATA and STS were vertically oval in all groups. The correlation between ATA, STS and age, ACD, AL, and K values showed different significance for each meridian according to the refractive error. ATA increased as the horizontal WTW, ACD, and AL increased and Sim K decreased. STS shows relatively smaller explanatory power than ATA in the stepwise multivariate regression analysis. Conclusions This study is the first to analyze the relationship between ATA and STS compared to WTW by different refractive error. The difference between the horizontally oval WTW and vertically oval anterior chamber can be large, especially in myopia. ATA showed a greater positive correlation than STS with AL and ACD.

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Section: Discussionmentioning

confidence: 99%

Evaluation of angle-to-angle and spur-to-spur using swept source optical coherence tomography in different refractive error

Yun

Min²,

Kim³

2022

PLoS ONE

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Clinical applications of anterior segment swept-source optical coherence tomography: A systematic review

Mirzayev

Gündüz

Ellialtıoğlu

et al. 2023

Photodiagnosis and Photodynamic Therapy

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Evaluation of the Performance of Two Nomograms and Four Vault Prediction Formulas for Implantable Collamer Lens Size Selection

Tang¹,

Duan²,

Liu³

et al. 2023

J Refract Surg

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Purpose: To evaluate the performance of different nomograms and vault prediction formulas in predicting the optimal Implantable Collamer Lens (ICL; STAAR Surgical) size and vault. Methods: This retrospective study included 108 participants (214 eyes) who underwent ICL implantation. The efficacy of the manufacturer's nomogram, Parkhurst nomogram, NK formula, KS formula, Zhu formula, and ZZ formula was assessed by comparing the indicated ICL sizes to the postoperative vault measurements. Additionally, Bland-Altman plots and the Friedman test were used to assess the agreement and absolute error between the actual vault and predicted vault. Results: The proportions of the ideal ICL category recommended by the manufacturer's nomogram, Parkhurst nomogram, NK formula, KS formula, Zhu formula, and ZZ formula were 50.5%, 45.3%, 46.7%, 42.5%, 50.0%, and 28.5%, respectively. The mean differences between the actual vault and the predicted vault using the NK, KS, Zhu, and ZZ formulas were 144.1 ± 261.1, −19.3 ± 179.6, 70.8 ± 284.2, and 182.6 ± 361.5 μm, respectively. The predicted ICL vault tended to overestimate the actual ICL vault, particularly when choosing a larger ICL size. The KS formula shows the smallest deviation in prediction error and is least affected by variation in ICL size. Conclusions: White-to-white distance from the Pentacam (Oculus Optikgeräte GmbH) coupled with the manufacturer's nomogram performed well for ICL size selection. Four vault prediction formulas tended to overestimate the actual ICL vault, particularly when selecting a larger ICL size. The KS formula appeared to have the least bias of the formulas. Simultaneously, vault prediction formulas need to be modified according to the ICL size. [ J Refract Surg . 2023;39(7):456–461.]

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Displacement between anterior chamber width obtained by swept-source anterior segment optical coherence tomography and white-to-white distance

Cited by 4 publications

References 31 publications

Evaluation of angle-to-angle and spur-to-spur using swept source optical coherence tomography in different refractive error

Evaluation of angle-to-angle and spur-to-spur using swept source optical coherence tomography in different refractive error

Clinical applications of anterior segment swept-source optical coherence tomography: A systematic review

Evaluation of the Performance of Two Nomograms and Four Vault Prediction Formulas for Implantable Collamer Lens Size Selection

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