Fig. 4.
The comparison of keratectasia volume (KEV) distribution between flattening group (ΔKmax > 1.00 D) and group 2(ΔKmax < 1.00 D)
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.