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Abstract #9230 Published in IGR 5-2
Computer-assisted retinal vessel measurement in an older population: correlation between right and left eyes
Leung H; Wang JJ; Rochtchina E; Tan AG; Wong TY; Hubbard LD; Klein R; Mitchell PClinical and Experimental Ophthalmology 2003; 31: 326-330
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 (r2) 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 (r2 = 0.70) and venules (r2 = 0.77). Higher correlation was found for intragrader (r2, 0.75-079) than for intergrader assessment (r2, 0.67-0.72). Moderate correlation was found in arteriole-to-venule ratio assessed by the same (r2 = 0.57) or different (r2 = 0.52) graders. Measurements from one eye can thus adequately represent the retinal vessel diameters of a person.
Classification:
9.2.2 Other risk factors for glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
