From vspblog.com:

“To raise awareness about the connection between diabetes and eye health, VSP’s headquarters will be lit blue each night. VSP is proud to participate in this global event. Signs of diabetes can be seen in an eye exam before a person is even aware they have it.”

And another fellow vspblogger wrote:

“World Diabetes Day is a global awareness campaign that’s celebrated every year on November 14. Iconic landmarks and buildings across the world are lit in blue to create a united voice for diabetes awareness!
Together we can shed light on the impacts of this growing disease and the need to find a cure.”

Read more from vspblog.com