Lengwiler F, et al. – The target of this study was to assess the inter–rater and intra–rater reliability of objective cyclotorsion measurements obtained in healthy individuals, via the Heidelberg Spectralis spectral domain—optical coherence tomography (SD–OCT) device. A very high repeatability was illustrated of objective cyclotorsion measurements within and between observers, through the Heidelberg Spectralis OCT. SD–OCT/scanning laser ophthalmoscopy (SLO) imaging served as a reliable imaging method to estimate and study cyclotorsion.