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.
Fundus image of a healthy subject during a DVA measurement. Four primary vessel segments [superior as well as inferior temporal artery (sTA/iTA) and vein (sTV/iTV)] were selected in a distance of at least 0.5 disk diameters (DD) from the optic disk margin.
