Phase-based OCT (ph-OCT) has shown pulse-dependent TM motion in enucleated non-human primate and live human eyes . In live human imaging, there was significant correlation with the digital/cardiac pulse with TM motion. This correlation allowed assessment of the phase lag and time delay between TM motion and the cardiac pulse where the digital pulse would occur prior to the TM motion. A significant linear relationship was also present between the TM phase lag and the heart rate.