Purpose:
To determine measurement repeatability and reproducibility of optic nerve head (ONH) parameters in glaucoma patients with the Cirrus HD-OCT (Carl Zeiss Meditec, Inc., Dublin, CA).
Methods:
Inter-operator and inter-device phases were performed on subjects with glaucoma from early to advanced severity. For the inter-device phase, each subject was imaged by a single operator on three Cirrus HD-OCT devices. For the inter-operator phase, each subject was imaged on a single Cirrus HD-OCT device by three different operators. A total of three Optic Disc Cube 200 x 200 scans were obtained per operator or per device for a total of nine scans per phase. Analysis was performed using the Cirrus HD-OCT version 6.0 software. A total of 53 eyes from 53 subjects were included in the study.
Results:
Table 1 shows the optic nerve head parameter repeatability and reproducibility standard deviation and limits along with the coefficient of variability.
Conclusions:
The Cirrus HD-OCT ONH parameters show good repeatability and reproducibility in a glaucoma population.
Keywords: imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound) • optic nerve • optic disc