American Optometric Association
The American Optometric Association is the United States' number one optometric authority, with over 35,000 members nationwide. They play a great role in establishing professional standards for the optometric field, as well as making great contributions to research and education.
At the AOA's web site, you are able to read information on many optometric diseases, and gather information on the relevant topics in optometry today. In addition, you can see a calendar of important optometric events, and search for AOA-affiliated optometrists in any region of the United States.