Visa Information

Customs Information for Entry to Lithuania

Make sure to carry proper identification and documents while traveling to the congress. Optica strongly encourages you to apply for any additional documentation (i.e., visa) no later than 6 months prior to the event, as the application process can be lengthy.

Letter of Invitation

Letters of Invitation (or Visa Letters) now require the requester to register first. After registering, a confirmation email with a link to the Letter of Invitation Request Form will be sent. Once the form is complete and submitted, an email with a link to download a PDF Letter of Invitation will be sent. 

Please note: Letters of Invitation are non-transferable. Show Management will not edit or update a completed Letter of Invitation. 

Important information regarding Visa Invitation Letters:

• The name of the registrant must be an exact match as it appears on their passport. Any differences between the name on your passport and the name on your invitation letter or other documentation could lead to a delay and/or denial of your visa. 
• If you are presenting a paper, include the title and session in which the paper will be presented, or if you are exhibiting, please indicate so in your request.
• Please note that each individual requesting an invitation letter must fill out a separate form. All letters will be sent in PDF form to the email address provided.