Journal
CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
Volume 31, Issue 4, Pages 326-330Publisher
WILEY-BLACKWELL
DOI: 10.1046/j.1442-9071.2003.00661.x
Keywords
agreement; Blue Mountains Eye Study; computer-assisted grading; retinal vessel diameter; symmetry
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Funding
- NEI NIH HHS [EY06594] Funding Source: Medline
- NHLBI NIH HHS [HL 59259] Funding Source: Medline
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This study assessed the correlation between computer-assisted retinal vessel measurements of right and left eyes, from subjects in a defined, community-based older population. Retinal photographs from participants in the Blue Mountains Eye Study were digitized. All retinal arterioles and venules located 0.5-1.0 disc diameters from the optic disc margin were identified and a computer program measured their diameters. Pearson correlation (R-2 ) statistic was used to assess the correlation in a random subsample of 1546 images. Substantial correlation between right and left eye measurements was found for summary indices of retinal arterioles (R-2 = 0.70) and venules (R-2 = 0.77). Higher correlation was found for intragrader (R-2 0.75-079) than for intergrader assessment (R-2 0.67-0.72). Moderate correlation was found in arteriole-to-venule ratio assessed by the same (R-2 = 0.57) or different (R-2 = 0.52) graders. Measurements from one eye can thus adequately represent the retinal vessel diameters of a person.
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