Figure 3 | Scientific Reports

Figure 3

From: Impact of signal strength on quantitative retinal and choriocapillaris flow measurement from optical coherence tomography angiography

Figure 3

Representative 6 × 6 mm en face choriocapillaris (CC) optical coherence tomography angiography (OCTA) images with application of neutral density filter (NDF) of a 35-year-old healthy male subject. Signal strength (SS) decreased significantly more for spectral domain OCTA (SD-OCTA) than swept-source OCTA (SS-OCTA). The CC images became dark since the areas of black pixels increased when SS decreased. The CC flow deficit (CCFD) increased from 31.4–42.0 to 53.7% for SD-OCTA, and from 22.4–28.3 to 38.7% for SS-OCTA when SS decreased, respectively.

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