Repeatability and agreement of Scheimpflug-based and swept-source optical biometry measurements.
Purpose: To evaluate the repeatability and comparability of biometry parameters between a Scheimpflug-based topography with axial length measurement (Pentacam AXL, Oculus, Wetzlar, Germany) and a swept-source optical biometry (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany).Methods: A total of...
| Published in: | Contact Lens & Anterior Eye Vol. 40; no. 5; pp. 318 - 323 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Published: |
Elsevier B.V.
Oct2017
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=124938756&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 124938756 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13670484 KJM jtl: Contact Lens & Anterior Eye issn: 13670484 maglogo: N pubinfo: dt: Oct2017 vid: 40 iid: 5 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 124938756 124938756 NLM28342729 10.1016/j.clae.2017.03.007 NLM28342729 124938756 ppf: 318 ppct: 5 formats: tig: atl: Repeatability and agreement of Scheimpflug-based and swept-source optical biometry measurements. aug: au: Sel, Saadettin Stange, Jana Kaiser, Delia Kiraly, Laszlo affil: Universitäts-Augenklinik, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany sug: subj: Cornea Anatomy and Histology Biometrics Equipment and Supplies Anterior Chamber Anatomy and Histology Diagnosis, Eye Photography Equipment and Supplies Middle Age Adult Female Male Prospective Studies Astigmatism Diagnosis Adolescence Corneal Topography Young Adult Research Subjects Tomography, Optical Coherence Equipment and Supplies Reproducibility of Results Observer Bias Scales Middle Aged: 45-64 years Adult: 19-44 years Adolescent: 13-18 years Female Male ab: Purpose: To evaluate the repeatability and comparability of biometry parameters between a Scheimpflug-based topography with axial length measurement (Pentacam AXL, Oculus, Wetzlar, Germany) and a swept-source optical biometry (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany).Methods: A total of 50 eyes from 50 adult subjects had biometry measurements in one session three times using the Pentacam AXL and the IOLMaster 700. Keratometry, anterior chamber depth (ACD) and axial length (AL) values were obtained by both devices. Mean keratometry (Kmean) was calculated and the corneal spherocylinder was converted into power vectors (J0, J45). Repeatability was assessed based on intraclass correlation coefficient (ICC). Agreement was evaluated by linear regression analysis and Bland-Altman analysis by calculating the mean difference and 95% limits of agreement (LoA).Results: Assessment of intraoperator repeatability by means of ICC showed excellent reproducibility of measurements for both devices and all parameters examined ranging from 0.994 to 1.0. IOLMaster 700 exhibited significantly higher Kmean (p<0.001) and AL (p<0.001) values than the Pentacam AXL. Pentacam AXL showed significantly higher ACD (p<0.001) measurements than IOLMaster 700. There was no statistically significant difference of J0 (p=0.115) and J45 (p=0.255) values between Pentacam AXL and IOLMaster 700.Conclusions: Both devices provide high reproducible values for all parameters investigated. J0 and J45 values are statistically and clinically interchangeable between Pentacam AXL and IOLMaster 700. All other parameters are statistically different. In clinical practice, the differences for ACD and AL are to small and the values can be used interchangeable. However, Kmean values are clinically and statistically different and cannot be used interchangeable between the two devices. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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