An official website of the United States government
Here’s how you know
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.
Lutein is a type of organic pigment called a carotenoid. It is related to ... filter, protecting the eye tissues from sunlight damage. Foods rich in ...