Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System
Joint Authors
Wang, Xiaogang
Dong, Jing
Zhang, Yaqin
Zhang, Suhua
Sun, Bin
Wang, Xiaoliang
Tang, Maolong
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-01
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Purpose.
To investigate interdevice agreement among corneal topography/ray-tracing aberrometry (iTrace), partial coherence interferometry (IOLMaster), and Scheimpflug imaging (Pentacam) for the measurement of corneal astigmatism.
Methods.
The analysis included 90 eyes of 90 subjects without ocular disease.
The main outcome measures were corneal cylinder power and axis of astigmatism.
All corneal astigmatism measurements were converted to two perpendicular components by using vector analysis.
Interdevice agreement was assessed using Bland–Altman analysis, paired sample t-test, and one-way analysis of variance.
Results.
No significant interdevice difference existed in the astigmatism magnitude, cardinal component, and oblique component (all P>0.05).
On comparing iTrace wavefront and simulated keratometry (SimK) astigmatism, significant differences were observed in the astigmatism magnitude and oblique component (both P<0.01), but not in the cardinal component (P=0.687).
On comparing Pentacam pupil 3 mm and corneal vertex 3 mm axial astigmatism, significant difference was observed in the astigmatism magnitude (P<0.001), but not in the cardinal and oblique components (both P>0.05).
Conclusions.
The iTrace, IOLMaster, and Pentacam devices could be used interchangeably for corneal astigmatism measurement.
However, the measurement difference in iTrace wavefront and SimK astigmatism and Pentacam pupil 3 mm and vertex 3 mm axial astigmatism should be considered in clinic practice.
American Psychological Association (APA)
Zhang, Yaqin& Dong, Jing& Zhang, Suhua& Sun, Bin& Wang, Xiaoliang& Tang, Maolong…[et al.]. 2020. Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System. Journal of Ophthalmology،Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1189343
Modern Language Association (MLA)
Zhang, Yaqin…[et al.]. Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System. Journal of Ophthalmology No. 2020 (2020), pp.1-7.
https://search.emarefa.net/detail/BIM-1189343
American Medical Association (AMA)
Zhang, Yaqin& Dong, Jing& Zhang, Suhua& Sun, Bin& Wang, Xiaoliang& Tang, Maolong…[et al.]. Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System. Journal of Ophthalmology. 2020. Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1189343
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189343