Reproducibility of Scleral Spur Identification and Angle Measurements Using Fourier Domain Anterior Segment Optical Coherence Tomography
Joint Authors
Nagi, Kundandeep S.
Lin, Shan C.
Feldman, Robert M.
Cumba, Ricardo J.
Radhakrishnan, Sunita
Mankiewicz, Kimberly A.
Bell, Nicholas P.
Chuang, Alice Z.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-01
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Purpose.
To evaluate intraobserver and interobserver agreement in locating the scleral spur landmark (SSL) and anterior chamber angle measurements obtained using Fourier Domain Anterior Segment Optical Coherence Tomography (ASOCT) images.
Methods.
Two independent, masked observers (SR and AZC) identified SSLs on ASOCT images from 31 eyes with open and nonopen angles.
A third independent reader, NPB, adjudicated SSL placement if identifications differed by more than 80 μm.
Nine months later, SR reidentified SSLs.
Intraobserver and interobserver agreement in SSL placement, trabecular-iris space area (TISA750), and angle opening distance (AOD750) were calculated.
Results.
In 84% of quadrants, SR’s SSL placements during 2 sessions were within 80 μm in both the X- and Y-axes, and in 77% of quadrants, SR and AZC were within 80 μm in both axes.
In adjudicated images, 90% of all quadrants were within 80 μm, 88% in nonopen-angle eyes, and 92% in open-angle eyes.
The intraobserver and interobserver correlation coefficients (with and without adjudication) were above 0.9 for TISA750 and AOD750 for all quadrants.
Conclusions.
Reproducible identification of the SSL from images obtained with FD-ASOCT is possible.
The ability to identify the SSL allows reproducible measurement of the anterior chamber angle using TISA750 and AOD750.
American Psychological Association (APA)
Cumba, Ricardo J.& Radhakrishnan, Sunita& Bell, Nicholas P.& Nagi, Kundandeep S.& Chuang, Alice Z.& Lin, Shan C.…[et al.]. 2012. Reproducibility of Scleral Spur Identification and Angle Measurements Using Fourier Domain Anterior Segment Optical Coherence Tomography. Journal of Ophthalmology،Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-475566
Modern Language Association (MLA)
Cumba, Ricardo J.…[et al.]. Reproducibility of Scleral Spur Identification and Angle Measurements Using Fourier Domain Anterior Segment Optical Coherence Tomography. Journal of Ophthalmology No. 2012 (2012), pp.1-14.
https://search.emarefa.net/detail/BIM-475566
American Medical Association (AMA)
Cumba, Ricardo J.& Radhakrishnan, Sunita& Bell, Nicholas P.& Nagi, Kundandeep S.& Chuang, Alice Z.& Lin, Shan C.…[et al.]. Reproducibility of Scleral Spur Identification and Angle Measurements Using Fourier Domain Anterior Segment Optical Coherence Tomography. Journal of Ophthalmology. 2012. Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-475566
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-475566