PMID: 9536873Apr 16, 1998Paper

Reproducibility of topographic measures of the glaucomatous optic nerve head

The British Journal of Ophthalmology
O GeyerM Lazar

Abstract

Laser scanning tomography provides an assessment of three dimensional optic disc topography. For the clinical purpose of follow up of glaucoma patients, the repeatability of the various measured variables is essential. In the present study, the reproducibility of morphometric variables calculated by the topographic scanning system, TopSS (Laser Diagnostic Technology, San Diego, CA) was investigated. Two independent measurements (30 minutes apart) each consisting of three complete images of the optic disc were performed on 16 eyes of 16 glaucoma patients using a TopSS. The instrument calculates 14 morphometric variables for the characterisation of the optic disc. From the two tailed paired tests, all variables were seen to have good reproducibility. However, correlation and regression analyses showed that only the three variables, volume below, half depth area, and average cup depth, are acceptably reproducible. The TopSS provides three variables which describe the physiological shape of the optic disc that have high reproducibility. These three variables might be useful for following the progression of optic disc changes in glaucoma patients.

References

Jan 1, 1992·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·J M Miller, J Caprioli
Jan 1, 1988·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·R VarmaR P Wilson
Jul 15, 1984·American Journal of Ophthalmology·F S MikelbergK Wijsman
Mar 1, 1980·Archives of Ophthalmology·J E Pederson, D R Anderson
Jan 1, 1995·International Journal of Epidemiology·J M Bland, D G Altman
Aug 1, 1993·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·K RohrschneiderH E Völcker

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Citations

Apr 26, 2002·The British Journal of Ophthalmology·A B CullinaneJ M Sparrow
Jun 8, 2004·Clinical & Experimental Ophthalmology·A Hakan DurukanM Zeki Bayraktar
Apr 8, 2004·Clinical & Experimental Ophthalmology·Yusuf AkarErgun Karaăgaoglu

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