Anterior-Segment Swept-Source Ocular Coherence Tomography and Scheimpflug Imaging Agreement for Keratometry and Pupil Measurements in Healthy Eyes

Pérez-Bartolomé, F.; Rocha‐de‐Lossada, Carlos; Sánchez‐González, José‐María; Feu-Basilio, Silvia; Torras-Sanvicens, Josep; Peraza‐Nieves, Jorge

doi:10.3390/jcm10245789

Cited by 7 publications

(7 citation statements)

References 21 publications

(36 reference statements)

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“…Regarding the measurement of the corneal characteristics, the three instruments showed no signi cant difference in the measurement of astigmatism in the control group. Pérez Bartolomé et al [22] reached a similar conclusion after comparing Pentacam and Fourier-domain OCT (FD-OCT). This may be because the instruments show higher consistency among patients with regular astigmatism than in keratoconus patients [23].…”

Section: Diagnostic Validity Of the Keratoconus Screening Indicators ...mentioning

confidence: 70%

Comparative study of the corneal morphological characteristics of keratoconus evaluated using CASIA2, Sirius, and Pentacam

Zhou,

Sun,

et al. 2023

Preprint

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Purpose To analyze the corneal morphology of keratoconus using CASIA2, Sirius, and Pentacam. Methods Patients diagnosed with keratoconus at the Eye and ENT Hospital of Fudan University (January-November 2022) were included. Corneal refraction, astigmatism, thickness, and elevation parameters were measured using CASIA2, Sirius, and Pentacam. The measurement differences, agreement, and the sensitivity and specificity of each instrument for diagnosing keratoconus was evaluated. P < 0.05 was considered statistically significant. Results A total of 61 keratoconus eyes and 48 healthy myopic eyes were included. The Ks and Kf measured using Sirius were the highest (p < 0.0001). The thinnest corneal thickness measured using Pentacam was the thickest (p < 0.0001); however, the significance disappears in the Kmax ≤ 48D keratoconus group. When the best fit sphere was based on CASIA2, the anterior and posterior elevations at thinnest points measured using Sirius were the highest in keratoconus group and the lowest in control group. Corneal refractive power measurements significantly differed among instruments (p < 0.0001). In the control group, the agreement limits for total corneal refractive power (TCRP), fKm, and pKm were lower and narrower than in keratoconus. In keratoconus group, Pentacam and CASIA2 showed the best consistency in the measurement of TCRP and fKm, whereas Pentacam and Sirius showed the best consistency in the measurement of pKm. Sensitivities for diagnosing keratoconus ranked from high to low: Pentacam, CASIA2, Sirius (p < 0.0001). Conclusion CASIA2, Sirius, and Pentacam exhibit differences in corneal elevation, refractive power, and thickness measurements, with poor consistency in refractive power measurement.

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Section: Diagnostic Validity Of the Keratoconus Screening Indicators ...mentioning

confidence: 70%

Comparative study of the corneal morphological characteristics of keratoconus evaluated using CASIA2, Sirius, and Pentacam

Zhou,

Sun,

et al. 2023

Preprint

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“…SD of Anterion measurements was 1.34 mm and of Pentacam HR 1.60 mm. 15 In our study, Pentacam WO had the highest SD with 1.23 mm. A further group compared IOL Master 700 (Carl Zeiss Meditec AG) and OA-2000 (Tomey Corp.), both biometers based on swept-source OCT, in a dimly lit room.…”

Section: Discussionmentioning

confidence: 99%

Pupil size measurements with a multifunctional aberrometer/coherence interferometer/tomographer and two infrared-based pupillometers

Davidova,

Biller,

Ademmer

et al. 2024

J Cataract Refract Surg

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Purpose: To compare precision of pupil size measurements of a multifunctional device (Pentacam AXL Wave (OCULUS; abbreviated as Pentacam) and two infrared based pupillometers (PupilX (Albomed), Colvard (Oasis medical)) and to compare repeatability of Pentacam and PupilX. Setting: Department of Ophthalmology, Goethe-University, Frankfurt, Germany Design: Prospective, comparative trial Methods: Pupil diameter of healthy eyes was measured with Colvard once and Pentacam without (WO) and with glare (WG), PupilX in 0, 1 and 16 lux three times each. In a second series measurements with Pentacam WO and PupilX in 0.06 and 0.12 lux were assessed. Results: 36 eyes of participants aged 21-63 years were included. Mean pupil diameter was 6.05 mm with Colvard, 5.79 mm (1st series), 5.50 mm (2nd series) with Pentacam WO, 3.42 mm WG, 7.26 mm PupilX in 0, 4.67 mm 1, 3.66 mm 16, 6.82 mm in 0.06 and 6.39 mm in 0.12 lux. Measurements with Pentacam WO were significantly different to PupilX in 0, 0.06, 0.12 and 1 lux (all p<0.001), but not to Colvard (p=0.086). Pupil size measured with Pentacam WG and PupilX in 16 lux was not significantly different (p=0.647). Consecutive measurements with Pentacam WO and WG had mean standard deviation of 0.23 and 0.20 mm respectively and with PupilX 0.11 in 0, 0.24 1 and 0.20 mm in 16 lux. Conclusions: Pentacam provided good assessment of pupil size, but was not equivalent to PupilX in low lighting conditions. Repeatability was more favourable for Pentacam.

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“…The 95% LoA widths of every parameter were narrower than those in our study, and the authors concluded that these parameters cannot be used interchangeably. Perez-Bartolome et al [ 21 ] compared the anterior segment SS-OCT (Anterion, Heidelberg Engineering) and Pentacam HR for corneal and pupil measurements in healthy eyes. In their study, pupil diameter and angle kappa were significantly longer when using Anterion (5.74 ± 1.34 and 0.37 ± 0.18 mm, respectively) than when using Pentacam (3.82 ± 1.60 and 0.26 ± 0.14 mm, respectively).…”

Section: Discussionmentioning

confidence: 99%

Repeatability and Agreement of Chord Mu between Scheimpflug Tomography and Swept-Source Optical Coherence Tomography

Kim,

Cho

et al. 2023

Korean J Ophthalmol

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Purpose: To evaluate repeatability and agreement of chord mu between Scheimpflug tomography (Pentacam HR) and sweptsource optical coherence tomography–based optical biometer (IOLMaster 700).Methods: In this retrospective study, 63 eyes from 33 patients were included. Chord mu, X and Y Cartesian distances between the corneal vertex and the pupil center (Px and Py), and the pupil diameter were compared using two instruments. Repeatability was evaluated using intraclass correlation coefficient (ICC), coefficient of variation (CoV), and within-subject standard deviation (Sw). Interdevice agreement was evaluated using paired t-tests and Bland-Altman plots.Results: Although Sw values for all parameters were similar between the two devices, CoV values of chord mu and pupil diameter were lower, and ICC values of those parameters were higher, in the IOLMaster 700 than in the Pentacam HR. Chord mu and pupil diameter values were higher in IOLMaster 700 than Pentacam HR (p < 0.01). The width of the 95% limit of agreement was wide for all parameters.Conclusions: IOLMaster 700 showed better repeatability than Pentacam HR in chord mu, Px, Py, and pupil diameter values. Because there were statistically significant differences and a low level of agreement in chord mu and pupil diameter values between the two devices, they cannot be used interchangeably.

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Anterior-Segment Swept-Source Ocular Coherence Tomography and Scheimpflug Imaging Agreement for Keratometry and Pupil Measurements in Healthy Eyes

Cited by 7 publications

References 21 publications

Comparative study of the corneal morphological characteristics of keratoconus evaluated using CASIA2, Sirius, and Pentacam

Comparative study of the corneal morphological characteristics of keratoconus evaluated using CASIA2, Sirius, and Pentacam

Pupil size measurements with a multifunctional aberrometer/coherence interferometer/tomographer and two infrared-based pupillometers

Repeatability and Agreement of Chord Mu between Scheimpflug Tomography and Swept-Source Optical Coherence Tomography

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