Comparison between FDI SD-OCT (A) and SS-OCT (B) in full-depth visualization of posterior ocular structures in a normal eye. Both OCT modalities showed clearly the full thickness of the retina and choroid. SD-OCT imaging showed the presence of the premacular bursa, which was not evident on SS-OCT imaging. Both imaging modalities showed the five layers of the choroid, including Bruch's membrane, choriocapillaris, two vascular layers (Haller's and Sattler's), and the suprachoroidal space. However, the choroidal structures were sharper in the SS-OCT image (B) compared to the FDI SD-OCT image (A) in magnified visualization.