Fig. 2From: The effect of image quality on the reliability of OCT angiography measurements in patients with diabetesEffect of signal strength index (SSI) values on average retinal capillary vessel density measurements (a, b) and on non-flow area (c). Measurement error of OCTA parameters (d–f) for scans with SSI scores ranging from 30 to 85; as SSI increases, measurement repeatability improvesBack to article page