Errors of classical and spectral optical coherence tomography in the measurement of retinal nerve fiber layer in healthy individuals
Shpak, A.A.; Ogorodnikova, S.N.
Vestnik Oftalmologii 126(5): 19-21
2010
ISSN/ISBN: 0042-465X PMID: 21328886 Document Number: 644652
Two similar groups of healthy individuals were examined by optical coherence tomography (OCT) on a Stratus OCT 3000 (Carl Zeiss Meditec, Inc. USA) (n = 26) and by spectral OCT on a 3D OCT-1000 (Topcon, Japan) (n = 25). Each of two operators made two peripapillary retinal nerve fiber layer measurements during a session. The measurement error indicators (intraindividual standard deviation and repeatability rate) were determined for each of the operators and in the comparison of the latter. Spectral OCT ensured a reduction in the measurement error indicators as compared with classical OCT, which was significant when the measurement was made by a rather skilled operator.