S Konno1, J Akiba, A Yoshida. 1. Department of Ophthalmology, Asahikawa Medical College, Japan. skonno@asahikawa-med.ac.jp
Abstract
PURPOSE: To assess the reproducibility of retinal thickness measurements in normal subjects and to compare foveal thickness using optical coherence tomography (OCT) and the scanning retinal thickness analyzer (RTA). METHODS: Two examiners performed foveal thickness measurements in 24 eyes of 12 healthy subjects using both OCT and the scanning RTA. Intraclass correlation coefficients (ICC) (intra-examiner and inter-examiner) were calculated for the paired foveal thickness measurements obtained with each instrument. RESULTS: The average foveal thicknesses measured with OCT and the scanning RTA were 155.1 +/- 14.9 microm and 107.8 +/- 18.6 microm, respectively. The intra-examiner ICCs from the two sessions using the OCT and the scanning RTA were 0.99 and 0.78 and 0.89 and 0.99, respectively. The inter-examiner ICCs of the OCT and the scanning RTA were 0.99 and 0.99, respectively. There was a significant correlation between the foveal thickness measurements with these two instruments (R2 = 0.629, P < 0.0001). CONCLUSION: The foveal thicknesses measured using OCT and the scanning RTA in healthy subjects agreed with the previously reported data on foveal thickness. Both instruments can reproducibly quantitate foveal thickness.
PURPOSE: To assess the reproducibility of retinal thickness measurements in normal subjects and to compare foveal thickness using optical coherence tomography (OCT) and the scanning retinal thickness analyzer (RTA). METHODS: Two examiners performed foveal thickness measurements in 24 eyes of 12 healthy subjects using both OCT and the scanning RTA. Intraclass correlation coefficients (ICC) (intra-examiner and inter-examiner) were calculated for the paired foveal thickness measurements obtained with each instrument. RESULTS: The average foveal thicknesses measured with OCT and the scanning RTA were 155.1 +/- 14.9 microm and 107.8 +/- 18.6 microm, respectively. The intra-examiner ICCs from the two sessions using the OCT and the scanning RTA were 0.99 and 0.78 and 0.89 and 0.99, respectively. The inter-examiner ICCs of the OCT and the scanning RTA were 0.99 and 0.99, respectively. There was a significant correlation between the foveal thickness measurements with these two instruments (R2 = 0.629, P < 0.0001). CONCLUSION: The foveal thicknesses measured using OCT and the scanning RTA in healthy subjects agreed with the previously reported data on foveal thickness. Both instruments can reproducibly quantitate foveal thickness.
Authors: Esther M Hoffmann; Felipe A Medeiros; Christina Kramann; Norbert Pfeiffer; Franz H Grus Journal: Graefes Arch Clin Exp Ophthalmol Date: 2005-08-05 Impact factor: 3.117
Authors: Joseph Ho; Dinorah P E Castro; Leonardo C Castro; Yueli Chen; Jonathan Liu; Cynthia Mattox; Chandrasekharan Krishnan; James G Fujimoto; Joel S Schuman; Jay S Duker Journal: Invest Ophthalmol Vis Sci Date: 2010-02-24 Impact factor: 4.799