En-face choroidal vascularity map of the macula in healthy eyes

摘要

Purpose: To report the en-face choroidal vascularity index in healthy eyes. Methods: Thirty eyes of 30 healthy individuals were studied. Multiple high-density cross-sectional swept source optical coherence tomography scans were obtained to create a volume scan. The choroid was segmented for the whole volume scan and choroidal inner boundaries were flattened. Subsequently, multiple en-face scans separated by 25?μm were obtained and binarized. Choroidal vascularity index was calculated at level of choriocapillaris, medium, and large choroidal vessels. Results: The mean age of the study cohort was 35.6?±?8.8?years. The overall mean en-face choroidal vascularity index was 54.25?±?0.55%. There was a statistically significant difference of choroidal vascularity index in choriocapillaris (53.16?±?0.43%), medium choroidal vessel (51.38?±?0.27%), and large choroidal vessel (55.69?±?0.87%) (p?