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.
Course of risk factors of DR over time. Mean HbA1c (A), systolic blood pressure (B), and total cholesterol (C) by clusters of the development of DR. ●, cluster A “persistent no DR.” ○, cluster B “slow regression.” ▲, cluster C “slow progression from minimal to moderate nonproliferative DR.” △, cluster D “fast progression nonproliferative DR to PDR or treated DR.” ■, cluster E “persistent PDR or treated DR.” PDR, proliferative DR.
