• International Attendees

  • International AttendeeCheck your travel documents and passports to ensure that they are up-to-date for AAO 2016 in Chicago.

    Letter of Invitation

    To assist with your visitor visa application, the Academy provides a letter of invitation to AAO 2016.

    Use the online letter generator now.


    Many international attendees will require a visitor visa to enter the United States. Apply early for scientific conferences, visa applications should be made no later than 90 days prior to travel.