Evaluation of ciliary sulcus diameter using ultrasound biomicroscopy in emmetropic eyes and myopic eyes

Biermann, Julia; Bredow, Laura; Boehringer, Daniel; Reinhard, Thomas

doi:10.1016/j.jcrs.2011.03.048

Cited by 61 publications

(51 citation statements)

References 21 publications

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“…These results agree with some estimates of bias between horizontal WTW and STS estimates previously reported (bias -0.9mm), 19 but are completely contradictory of others (bias: 0.9mm; bias: 0.5mm; bias: 0.4mm). 2,18,24 This shows that there is very poor agreement between UBM devices in STS estimates (bias up to 1.2mm, 3 ICL sizes), highlighting the need for a conversion table between devices. (Table 4).…”

Section: Discussionmentioning

confidence: 99%

“…In this article we have attempted to estimate an appropriate error correction for all currently reported devices with the inclusion of a conversion table to be used in conjugation with the STAAR nomogram for ICL sizing. 0.24 (36) 0.47 (18) (36) 0.01 (37) 100 72 0.07…”

Section: Discussionmentioning

confidence: 99%

“…[4][5][6][7][8][9][10][11][12] Despite efforts to improve predictability of vault following ICL implantation, it remains poor; the reasons for this are multiple. 5,[13][14][15][16][17][18][19][20][21][22][23] High-frequency ultrasound biomicroscopy (UBM) with a wide scanning field has enabled direct measurement of horizontal sulcus-to-sulcus (STS) diameter. Poor correspondence (г<0.50) between the horizontal WTW and STS measure has since been reported, however the width of the limits of agreement (LoA) reported between horizontal WTW and STS measures is similar to repeatability limits of STS estimates.…”

Section: Introductionmentioning

confidence: 99%

“…1690), but since the inter-device agreement (between Vumax and Orbscan/IOLMaster) is better than intra-device precision (Vumax with itself), a conclusion of "poor" agreement is unsupported. 18 In another article on UBM Artemis device, the CoV for STS measures was estimated as 0.4%, referencing a study on metallic bolt (not an eye), before reporting the "poor" agreement between the Artemis UBM and the Orbscan. 2 Considering the higher axial resolution than lateral resolution with UBM devices (50MHz probe: axial resolution 30-40µm and lateral resolution 50-60µm) and since central corneal thickness is a more clearly defined anatomical structure with less to inhibit clear imaging, it is reasonable that repeatability of central corneal thickness would be at least as good as STS.…”

Section: Introductionmentioning

confidence: 99%

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Correcting Interdevice Bias of Horizontal White-to-White and Sulcus-to-Sulcus Measures Used for Implantable Collamer Lens Sizing

Guber

Bergin

Perritaz

et al. 2016

American Journal of Ophthalmology

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PURPOSE:To assess the agreement and repeatability of horizontal white-to-white (WTW) and horizontal sulcus-to-sulcus (STS) diameter measurements and use this data in combination with available literature to correct for inter-device bias in pre-operative implantable collamer lens (ICL) size selection. DESIGN: Inter-instrument reliability and bias assessment study. METHODS: A total of 107 eyes from 56 patients assessed for ICL implantation at our institution were included in the study. This was a consecutive series of all patients with suitable available data. The agreement and bias between WTW (measured with the Pentacam and BioGraph devices) and STS (measured with the HiScan device) were estimated. RESULTS: The mean spherical equivalent was -8.93D ± 5.69D. The BioGraph measures of WTW were wider than those taken with the Pentacam (bias= 0.26 mm, p<0.01), and both horizontal WTW measures were wider than the horizontal STS measures (bias >0.91 mm, p<0.01). The repeatability (Sr) of STS measured with the HiScan was 0.39 mm, which was significantly reduced (Sr=0.15 mm) when the average of two measures were used. Agreement between the horizontal WTW measures and horizontal STS estimates when bias was accounted for was г=0.54 with the Pentacam and г=0.64 with the BioGraph. CONCLUSIONS: Large inter-device bias was observed for WTW and STS measures. STS measures demonstrated poor repeatability, but the average of repeated measures significantly improved repeatability. In order to conform to the Federal Drug Administration's accepted guidelines for ICL sizing clinicians should be aware of and account for the inconsistencies between devices.3

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Correcting Interdevice Bias of Horizontal White-to-White and Sulcus-to-Sulcus Measures Used for Implantable Collamer Lens Sizing

Guber

Bergin

Perritaz

et al. 2016

American Journal of Ophthalmology

View full text Add to dashboard Cite

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“…Studies have shown that the anterior segment of biometric parameters, e.g. horizontal corneal diameter (white-to-white, WTW), anterior chamber depth (ACD) [14] and ciliary sulcus-to-sulcus (STS) diameter [15,16], were correlated with the vault value. Kojima et al [17] reported that the distance between STS plane and anterior crystalline lens surface (STSL) was relevant to the vault value as well.…”

Section: Introductionmentioning

confidence: 99%

Preoperative Biometric Parameters Predict the Vault after ICL Implantation: A Retrospective Clinical Study

Zheng

Liang

et al. 2016

Ophthalmic Res

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Purpose: To investigate the correlation between the preoperative biometric parameters of the anterior segment and the vault after implantable Collamer lens (ICL) implantation via this retrospective study. Design: Retrospective clinical study. Methods: A total of 78 eyes from 41 patients who underwent ICL implantation surgery were included in this study. Preoperative biometric parameters, including white-to-white (WTW) diameter, central corneal thickness, keratometer, pupil diameter, anterior chamber depth, sulcus-to-sulcus diameter, anterior chamber area (ACA) and central curvature radius of the anterior surface of the lens (Lenscur), were measured. Lenscur and ACA were measured with Rhinoceros 5.0 software on the image scanned with ultrasound biomicroscopy (UBM). The vault was assessed by UBM 3 months after surgery. Multiple stepwise regression analysis was employed to identify the variables that were correlated with the vault. Results: The results showed that the vault was correlated with 3 variables: ACA (22.4 ± 4.25 mm²), WTW (11.36 ± 0.29 mm) and Lenscur (9.15 ± 1.21 mm). The regressive equation was: vault (mm) = 1.785 + 0.017 × ACA + 0.051 × Lenscur - 0.203 × WTW. Conclusions: Biometric parameters of the anterior segment (ACA, WTW and Lenscur) can predict the vault after ICL implantation using a new regression equation.

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Systematic Overview of Phakic Intraocular Lenses

Lwowski¹,

Kook²

2023

Cataract and Lens Surgery

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Evaluation of ciliary sulcus diameter using ultrasound biomicroscopy in emmetropic eyes and myopic eyes

Abstract: Sulcus diameter measurements were most precise using UBM. The ciliary sulcus is vertically oval. The WTW diameter is not suitable for calculating a PC pIOL diameter, particularly in myopic eyes.

Cited by 61 publications

References 21 publications

Correcting Interdevice Bias of Horizontal White-to-White and Sulcus-to-Sulcus Measures Used for Implantable Collamer Lens Sizing

Correcting Interdevice Bias of Horizontal White-to-White and Sulcus-to-Sulcus Measures Used for Implantable Collamer Lens Sizing

Preoperative Biometric Parameters Predict the Vault after ICL Implantation: A Retrospective Clinical Study

Systematic Overview of Phakic Intraocular Lenses

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