Anterior Chamber Measurements by Pentacam and AS-OCT in Eyes With Normal Open Angles

PURPOSE To assess the reproducibility and agreement of anterior chamber measurements between the Pentacam (PTC) and the Anterior segment optical coherence tomography (AOCT) in normal healthy eyes with open angle. METHODS Prospective cross-sectional comparative case series. A total of 162 eyes of 81 healthy volunteers with normal open angle were included in this study. Anterior chamber angle (ACA) and anterior chamber depth (ACD) were measured with PTC and AOCT. Intra-observer variability and inter-methods agreement of both instruments for ACA and ACD were evaluated. RESULTS Values of temporal and nasal ACA measured by two instruments were similar, and the results of ACD were also not significantly different between modalities (p > 0.01). ACA and ACD measurements by PTC and AOCT showed good intra-observer and inter-method agreements (all > 0.9). CONCLUSIONS PTC and AOCT are presumed to be very useful for the anterior chamber angle examination. They may provide good images and quantitative data about the angle structures including ACA and ACD.