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Titel: Comparison of 2 modern swept-source optical biometers : IOLMaster 700 and Anterion
VerfasserIn: Langenbucher, Achim
Szentmáry, Nóra
Cayless, Alan
Wendelstein, Jascha
Hoffmann, Peter
Sprache: Englisch
Titel: Graefe's Archive for Clinical and Experimental Ophthalmology
Verlag/Plattform: Springer Nature
Erscheinungsjahr: 2022
Freie Schlagwörter: Optical biometer
Swept-source OCT
IOLMaster700
Anterion
Power vector analysis
Intraocular lens power calculation
DDC-Sachgruppe: 610 Medizin, Gesundheit
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Purpose To compare biometric measures from 2 modern swept-source OCT biometers (IOLMaster700 (Z, Carl-ZeissMeditec) and Anterion (H, Heidelberg Engineering)) and evaluate the efect of measurement diferences on the resulting lens power (IOLP). Methods Biometric measurements were made on a large study population with both instruments. We compared axial length (AL), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT) and corneal front and back surface curvature measurements. Corneal curvature was converted to power vectors and total power derived using the Gullstrand formula. A paraxial lens power calculation formula and a prediction for the IOL axial position according to the Castrop formula were used to estimate diferences in IOLP targeting for emmetropia. Results There were no systematic differences between measurements of AL (− 0.0146 ± 0.0286 mm) and LT (0.0383±0.0595 mm), whereas CCT yielded lower (7.8±6.6 µm) and ACD higher (0.1200±0.0531 mm) values with H. With H, CCT was lower for thicker corneas. The mean corneal front surface radius did not difer (−0.4±41.6 µm), but the corneal back surface yielded a steeper radius (−397.0±74.6 µm) with H, giving lower mean total power (−0.3469±0.2689 dpt). The astigmatic vector components in 0°/90° and 45°/135° were the same between both instruments for the front/back surface or total power. Conclusion The biometric measures used in standard formulae (AL, corneal front surface curvature/power) are consistent between instruments. However, modern formulae involving ACD, CCT or corneal back surface curvature may yield diferences in IOLP, and therefore, formula constant optimisation customised to the biometer type is required.
DOI der Erstveröffentlichung: 10.1007/s00417-022-05870-9
URL der Erstveröffentlichung: https://link.springer.com/article/10.1007/s00417-022-05870-9
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-387719
hdl:20.500.11880/34936
http://dx.doi.org/10.22028/D291-38771
ISSN: 1435-702X
0721-832X
Datum des Eintrags: 20-Jan-2023
Fakultät: M - Medizinische Fakultät
Fachrichtung: M - Augenheilkunde
Professur: M - Univ.-Prof. Dr. Dipl.-Ing. Achim Langenbucher
M - Prof. Dr. med. Nóra Szentmáry
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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