Figure 4.
Optical coherence tomography angiography (OCTA) scans of the three different groups of nonproliferative diabetic retinopathy. (A) mild NPDR; (B) moderate NPDR; (C) severe NPDR.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.