An official website of the United States government
Here's how you know
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.
Images obtained with Optos ultra-widefield (UWF) optomap imaging technology: (A) right eye retinography, first visit; (B) left eye retinography, first visit; (C) right eye retinography, 3 weeks later; (D) left eye retinography, 3 weeks later.