Repeatability of Automatic Measurements by an Anterior Segment Swept-Source OCT Biometer in Patients With Keratoconus.
| Autor: | Abicca I, Schiano-Lomoriello D, Gilardi M, Giannini D, Dinu V, Coutinho C, Savini G |
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| Jazyk: | angličtina |
| Zdroj: | Journal of refractive surgery (Thorofare, N.J. : 1995) [J Refract Surg] 2024 Jul; Vol. 40 (7), pp. e445-e452. Date of Electronic Publication: 2024 Jul 01. |
| DOI: | 10.3928/1081597X-20240514-03 |
| Abstrakt: | Purpose: To evaluate the repeatability of automatic measurements of a new anterior segment optical coherence tomographer (ANTERION; Heidelberg Engineering) and their agreement with an anterior segment optical coherence tomography device combined with Placido disc corneal topography (MS-39; CSO) in patients affected by keratoconus. Methods: Fifty-four consecutive patients were included. Three measurements were performed with the ANTERION and one with the MS-39. Repeatability was assessed by means of within-subject standard deviation, coefficient of variation (CoV), and intraclass correlation coefficient (ICC). Agreement was investigated with the 95% limits of agreement. The paired t -test and Wilcoxon matched-pairs test were performed to compare the measurements of the different devices. Results: Repeatability of ANTERION measurements was high, with an ICC greater than 0.98 for all parameters. Many parameters revealed a CoV of less than 1% and a CoV within 5% was obtained for astigmatism measurements. The ANTERION measured a significantly higher corneal power and the MS-39 more negative posterior keratometric values. These differences were mirrored by a moderate agreement for mean simulated keratometry and poor agreement for total corneal power and posterior keratometry. Conclusions: The ANTERION revealed high repeatability of automatic measurements and good agreement with the MS-39 for many parameters in patients affected by keratoconus, but for most parameters the two instruments cannot be considered interchangeable. [ J Refract Surg . 2024;40(7):e445-e452.] . |
| Databáze: | MEDLINE |
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