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.
a Image 07 from the DRIVE dataset. b Image 07 with the ONH and scleral crescent marked. The triangle is the center of the ONH marked by the ophthalmologist. The circle corresponds to the focal point of convergence of the blood vessels. c Image 18. d Image 18 with the ONH and optic cup marked.
