Multimodal OCT Reflectivity Analysis of the Cystoid Spaces in Cystoid Macular Edema

Figure 3

The color image makes it possible to correlate OCT-A and EnFace values on any arbitrary line (linear region of interest). This example shows a line that crosses a cyst through 4 regions. Segment A intercepts the tissue surrounding the cyst, B and C indicate two portions, one pale and one dark, of the cyst, and D highlights an area where cystoid space mixes with tissue. Out of the cyst (A) the plot shows sharp OCT-A peaks associated with high but smoother EnFace values. A similar relationship, although at a lower intensity level, is present also inside the cyst, in particular in the B tract, where small, but significant OCT-A peaks correlate with low EnFace levels. In the C tract both OCT-A and EnFace reach the lowest intensity levels, near to the image background signal. In D we can observe mixed peaks, according to the different structures present in this segment.