Assessing Errors Inherent in OCT-Derived Macular Thickness Maps
Joint Authors
Carroll, Joseph
Lever, Jackson F.
Odell, Daniel
Stepien, Kimberly E.
Dubis, Adam M.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-17
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
SD-OCT has become an essential tool for evaluating macular pathology; however several aspects of data collection and analysis affect the accuracy of retinal thickness measurements.
Here we evaluated sampling density, scan centering, and axial length compensation as factors affecting the accuracy of macular thickness maps.
Forty-three patients with various retinal pathologies and 113 normal subjects were imaged using Cirrus HD-OCT.
Reduced B-scan density was associated with increased interpolation error in ETDRS macular thickness plots.
Correcting for individual differences in axial length revealed modest errors in retinal thickness maps, while more pronounced errors were observed when the ETDRS plot was not positioned at the center of the fovea (which can occur as a result of errant fixation).
Cumulative error can exceed hundreds of microns, even under “ideal observer” conditions.
This preventable error is particularly relevant when attempting to compare macular thickness maps to normative databases or measuring the area or volume of retinal features.
American Psychological Association (APA)
Odell, Daniel& Dubis, Adam M.& Lever, Jackson F.& Stepien, Kimberly E.& Carroll, Joseph. 2011. Assessing Errors Inherent in OCT-Derived Macular Thickness Maps. Journal of Ophthalmology،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-491016
Modern Language Association (MLA)
Odell, Daniel…[et al.]. Assessing Errors Inherent in OCT-Derived Macular Thickness Maps. Journal of Ophthalmology No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-491016
American Medical Association (AMA)
Odell, Daniel& Dubis, Adam M.& Lever, Jackson F.& Stepien, Kimberly E.& Carroll, Joseph. Assessing Errors Inherent in OCT-Derived Macular Thickness Maps. Journal of Ophthalmology. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-491016
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-491016