Restoration of Foveal Bulge after Resolution of Diabetic Macular Edema with Coexisting Serous Retinal Detachment

Figure 1

Illustration of spectral-domain optical coherence tomography (SD-OCT) image. (a) A horizontal 30° scan through the central fovea was obtained. The SD-OCT image shows that the photoreceptor inner segment/outer segment (PIS/POS) line has a bulge at the central fovea, named a foveal bulge (arrowhead). The foveal bulge is defined by the POS length at the central fovea being 10 μm longer than the average POS length at 250 μm temporal and nasal from the central fovea (arrows). (b) Magnified view. The CFT is the distance between the surface of the internal limiting membrane (ILM) and the outer border of the retinal pigment epithelium (RPE) at the central fovea. The thickness of the outer nuclear layer (ONL) is the distance between the outer border of the ILM and the outer border of the external limiting membrane (ELM). The length of the PIS is the distance between the outer border of the ELM and the outer border of the PIS/POS line. The length of the POS is the distance between the outer border of the PIS/POS line and the inner border of the RPE.

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