Biometry with a new swept-source optical coherence tomography biometer: Repeatability and agreement with an optical low-coherence reflectometry device

Kurian, Mathew; Negalur, Nikhil; Das, Sudeep; Puttaiah, Narendra K.; Haria, Dhawal; J, Tejal S.; Thakkar, Maithil

doi:10.1016/j.jcrs.2016.01.038

Cited by 93 publications

(100 citation statements)

References 6 publications

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“…The eyes in question featured advanced cataract or high axial myopia. New swept source OCT biometers are expected to have higher success rates in measuring AL in cases of dense and posterior subcapsular cataracts [16].…”

Section: Discussionmentioning

confidence: 99%

Comparison of anterior segment parameters and axial length measurements performed on a Scheimpflug device with biometry function and a reference optical biometer

Muzyka−Woźniak¹,

Oleszko

2018

Int Ophthalmol

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Purpose To compare measurements of axial length (AL), corneal curvature (K), anterior chamber depth (ACD) and white-to-white (WTW) distance on a new device combining Scheimpflug camera and partial coherence interferometry (Pentacam AXL) with a reference optical biometer (IOL Master 500). To evaluate differences between IOL power calculations based on the two biometers. Methods Ninety-seven eyes of 97 consecutive cataract or refractive lens exchange patients were examined preoperatively on IOL Master 500 and Pentacam AXL units. Comparisons between two devices were performed for AL, K, ACD and WTW. Intraocular lens (IOL) power targeting emmetropia was calculated with SRK/T and Haigis formulas on both devices and compared. Results There were statistically significant differences between two devices for all measured parameters (P \ 0.05), except ACD (P = 0.36). Corneal curvature measured with Pentacam AXL was significantly flatter then with IOL Master. The mean difference in AL was clinically insignificant (0.01 mm; 95% LoA 0.16 mm). Pentacam AXL yielded higher IOL power in 75% of eyes for Haigis formula and in 62% of eyes for SRK/T formula, with a mean difference within ± 0.5 D for 72 and 86% of eyes, respectively. Conclusions There were statistically significant differences between AL, K and WTW measurements obtained with the compared biometers. Flatter corneal curvature measurements on Pentacam AXL necessitate formulas optimisation for Pentacam AXL.

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Section: Discussionmentioning

confidence: 99%

Comparison of anterior segment parameters and axial length measurements performed on a Scheimpflug device with biometry function and a reference optical biometer

Muzyka−Woźniak¹,

Oleszko

2018

Int Ophthalmol

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“…Moreover, the resolution of the ultrasound is limited to 150–200 μm with an accuracy of approximately 100 to 150 μm . The introduction of optical biometry in recent years was shown to improve on the drawbacks of A‐scan ultrasonography and is now established as the new standard . The first optical biometer, the IOLMaster, launched by Carl Zeiss, was commercially available in 1999.…”

Section: Methods Of Measuring Axial Elmentioning

confidence: 99%

“…36 The introduction of optical biometry in recent years was shown to improve on the drawbacks of A-scan ultrasonography and is now established as the new standard. [37][38][39] The first optical biometer, the IOLMaster, 40 launched by Carl Zeiss, was commercially available in 1999. Since then, a number of other instruments have been released ( Table 2).…”

Section: Methods Of Measuring Axial Elmentioning

confidence: 99%

“…The newest technology implemented in biometry integrates swept‐source optical coherence tomography. It would be of interest to use this technology for peripheral EL measurement, as studies using this technique measured only the central EL and results showed acceptable agreement with the other optical biometers …”

Section: Commercial Instruments Modified For Peripheral El Measurementmentioning

confidence: 99%

“…It would be of interest to use this technology for peripheral EL measurement, as studies using this technique measured only the central EL and results showed acceptable agreement with the other optical biometers. 37,39,68 ACMaster Schmucker and Schaeffel 69 applied optical low coherence interferometry for the measurement of peripheral EL in 10 mice. With the use of the ACMaster, Schmucker and her team had the eyes of the mice rotated in either the horizontal or the vertical meridian and could achieve peripheral EL measurements at 52 AE 6 visual angles.…”

Section: Spectral Domain Optical Coherence Tomographymentioning

confidence: 99%

See 2 more Smart Citations

Peripheral eye length measurement techniques: a review

Mekountchou

Conrad

Sankaridurg

et al. 2020

Clinical and Experimental Optometry

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Along with the rising myopia epidemic is the increasing interest in any ocular parameter that might inform understanding of myopia progression. The relationship between eye length and myopia has long been established but the recent interest in the central and peripheral retina, eye shape, retinal contour, and refractive error development is attracting more clinical and research interest in peripheral eye length measurements. Therefore, peripheral eye length measurements are an important step in the ongoing research involving the peripheral retina. Since the first measurement of peripheral eye length reported in 1991, many techniques and methods have been developed, which vary in many aspects. These techniques involve custom‐built or modified commercially available instruments, with the use of off‐axis targets and other considerations such as eye or head turn of the subject. The wide range of methods and instruments used for peripheral eye length measurements make it difficult to compare results and may account for some of the variations in the reported results. Specifications of the different methods are presented along with their advantages and disadvantages. Although researchers acknowledge a good agreement between the modified commercially available optical biometers for peripheral eye length measurement, the Lenstar LS 900 appears to offer better results. Nevertheless, the introduction to the market of an instrument specially designed for peripheral eye length might overcome the issues noted with other methods and could allow for more insights in future research involving the peripheral retina. Moreover, future studies may be able to track peripheral eye length changes and its relationship to the progression of myopia and find out if those changes are responsible for or correlated with important eye conditions.

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Preoperative Preparation and IOL Power Calculation

Morkin

Wang

Koch

et al. 2022

Albert and Jakobiec's Principles and Practice of Ophthalmology

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Biometry with a new swept-source optical coherence tomography biometer: Repeatability and agreement with an optical low-coherence reflectometry device

Abstract: None of the authors has a financial or proprietary interest in any material or method mentioned.

Cited by 93 publications

References 6 publications

Comparison of anterior segment parameters and axial length measurements performed on a Scheimpflug device with biometry function and a reference optical biometer

Comparison of anterior segment parameters and axial length measurements performed on a Scheimpflug device with biometry function and a reference optical biometer

Peripheral eye length measurement techniques: a review

Preoperative Preparation and IOL Power Calculation

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