Figure 2.
Scatter plot showing difference in vertical cup-to-disc ratio (VCDR) measured by stereoscopic disc photography and Discam against the average VCDR of the two measurements. Dashed lines represent mean difference and 95% limits of agreement.
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.