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.
Colored image showing the peripheral corneal isochromes, with a rounded square morphology. The matching changes of colour bands of the 1st through 3rd order of the Michel-Levy colour sequence are shown in the colour overlay.
