Journal
OPHTHALMIC EPIDEMIOLOGY
Volume 18, Issue 5, Pages 198-210Publisher
TAYLOR & FRANCIS INC
DOI: 10.3109/09286586.2011.602504
Keywords
Heidelberg Retina Tomograph; Glaucoma; Population-based; Epidemiology; Normative; Glaucomatous Optic Neuropathy; Glaucomatous visual field loss
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Funding
- Netherlands Organization for Health Research and Development (ZonMw) [2200.0035]
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Purpose: To establish normative values for Heidelberg Retina Tomograph (HRT3) variables and to develop HRT3-based criteria for glaucomatous optic neuropathy for epidemiological research in a white population. Methods: Consecutive participants in the Rotterdam Study were examined with HRT and simultaneous stereoscopic fundus photography (ImageNet) in addition to other ophthalmic examinations including intraocular pressure (IOP) measurements and perimetry. Normative values for all HRT3 variables were determined in participants who met all the following criteria: no glaucomatous visual field loss (GVFL), an IOP of 21mmHg or less, no IOP lowering treatment, and a negative family history of glaucoma. Sensitivity was determined in participants with glaucomatous visual field loss at a fixed high specificity of 97.5% - a value commonly used in population-based epidemiology. Results: A total of 2516 participants were included in this study of whom 66 had glaucomatous visual field loss in at least one eye and 1680 fulfilled the criteria for contributing to the normative values. The HRT3 linear cup-disc ratio (LCDR) variable, adjusted for disc area, showed the highest sensitivity, 35%, at the required specificity of 97.5%. The 97.5th percentile of the LCDR was 0.67 for small discs (up to 1.5mm
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