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Effect of signal strength on reproducibility of peripapillary retinal nerve fiber layer thickness measurement and its classification by time-domain optical coherence tomography

Authors
 Eun Suk Lee  ;  Hyunjoong Kim  ;  Joon Mo Kim 
Citation
 JAPANESE JOURNAL OF OPHTHALMOLOGY, Vol.54(5) : 414-422, 2010 
Journal Title
 JAPANESE JOURNAL OF OPHTHALMOLOGY 
ISSN
 0021-5155 
Issue Date
2010
MeSH
Cross-Sectional Studies ; Female ; Glaucoma/classification* ; Glaucoma/diagnosis ; Humans ; Intraocular Pressure ; Male ; Middle Aged ; Nerve Fibers/pathology* ; Optic Disk/pathology* ; Optic Nerve Diseases/classification* ; Optic Nerve Diseases/diagnosis ; Reproducibility of Results ; Retinal Ganglion Cells/pathology* ; Tomography, Optical Coherence/methods* ; Visual Acuity
Keywords
agreement ; classification ; optical coherence tomography ; reproducibility ; retinal nerve fiber layer
Abstract
PURPOSE: To assess the effect of signal strength (SS) on reproducibility of peripapillary retinal nerve fiber layer (RNFL) thickness measurement (measurement agreement) and its color-coded classification (classification agreement) by time-domain optical coherence tomography (OCT). METHODS: Two consecutive Stratus OCT scans with the Fast RNFL protocol were performed in 658 participants. Intraclass correlations and the linear-weighted kappa coefficient were calculated as indicators of RNFL measurement and classification agreement in participants grouped according to the difference in SS between consecutive OCT scans (interscan SS difference). RESULTS: Groups with a larger interscan SS difference (= 2) had lower measurement agreement than those with a smaller interscan SS difference (0 or 1) for the temporal quadrant and total average RNFL. Classification agreement for the nasal quadrant was lower in the groups with a larger interscan SS difference (= 2) than in those with a smaller interscan SS difference. The tendency of SS to affect classification and measurement agreement remained similar in the group with thinner RNFL thickness (≤85 μm), but not in the group with thicker RNFL. CONCLUSIONS: Careful attention should be paid when comparing two or more OCT scans for RNFL thickness measurement or its color-coded classification as the agreement may be sensitive to SS differences.
Full Text
http://link.springer.com/article/10.1007%2Fs10384-010-0850-9
DOI
10.1007/s10384-010-0850-9
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Lee, Eun Suk(이은석)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/102400
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