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T. A. Abunto, K. O'Hara, M. Durbin, V. Atkinson, K. Soules, A. Walia; Comparison of Central Corneal Thickness Measurements Between Cirrus HD-OCTTM and Visante OCTTM. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5793.
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© ARVO (1962-2015); The Authors (2016-present)
To demonstrate that Cirrus HD-OCT central corneal thickness (CCT) measurements correlate to measurements made with the Visante OCT (both from Carl Zeiss Meditec, Dublin, CA) and show that the repeatability of the measurements made by the two devices are comparable.
A total of 68 normal eyes from 68 subjects were scanned using the Cirrus HD-OCT and Visante OCT. In the Cirrus HD-OCT, imaging of the anterior segment was made possible by simply adjusting the imaging focus on the anterior segment structures. Three corneal scans each from the Cirrus HD OCT and Visante OCT were performed on all eyes. CCT measurements were made on each scan.
Results show that the mean CCT measured by the Visante OCT and Cirrus HD-OCT are very similar. The mean difference between measurements of the Cirrus HD-OCT and Visante OCT is 1.42 µm. The repeatability standard deviation of both devices are comparable. The attached table summarizes the results. The Cirrus HD-OCT measurements correlate very closely with the Visante OCT measurements, with a correlation number of 0.974. In the scatterplot, it can be seen that the paired measurements are close to the 45o line. This shows that there is a good agreement between the measurements of the Visante OCT and the Cirrus HD-OCT.
CCT measurements of the Cirrus HD OCT and the Visante OCT are very similar and are closely correlated. Repeatability of CCT measurements from both devices are excellent and are comparable.
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