Spaide and colleagues developed the technique of enhanced depth imaging (EDI) OCT, which provides in vivo, high-resolution, optical and cross-sectional images of the choroid, including choroidal thickness and large choroidal vessels2, 3. The reliability and repeatability of the choroid images have been documented in eyes with and without ocular diseases and in patients of different races4, 5. Therefore, the EDI-OCT has been an emerging area of study in various ocular diseases involving the choroid, including central serous chorioretinopathy, acute primary angle closure, open-angle glaucoma, nanophthalmic eyes, etc.6–9.