Welcome to ISOO Rio 2026
This page includes everything you need to prepare for our upcoming congress in Brazil—important dates, registration rates, abstract rules, program highlights, and travel tips. Scroll down or use the outline below to find key information quickly.
We are delighted to invite you to ISOO Rio 2026, taking place March 17–21, 2026 at the Sheraton Grand Rio Hotel & Resort. Nestled between lush mountains and the Atlantic Ocean, this beachfront venue offers exclusive rates for ISOO attendees—stay tuned for booking details.
Why Rio, Why Now
Rio de Janeiro’s dynamic energy provides the perfect stage for meaningful dialogue and forward-looking innovation in ocular oncology. This historic congress is an opportunity to spark new collaborations, explore the latest breakthroughs, and celebrate the rich diversity that fuels our specialty.
Conference Overview
Pre-Day: Workshops and preliminary sessions
Day 1: Uveal Melanoma & Other Intraocular Tumors
Day 2: Retinoblastoma
Day 3: Ocular Surface Tumors & Additional Intraocular Tumors
Day 4: Eyelid Tumors & Orbital Tumors
A more detailed agenda and speaker list will be announced as we approach the event.
Social & Cultural Highlights
Welcome Reception (March 18, 2026)
Kick off ISOO Rio 2026 in the Salão Carioca with panoramic ocean views and the excitement of reuniting with peers worldwide.
Gala Dinner (March 19, 2026)
Venue to be confirmed—expect an elegant evening of camaraderie and celebration.
White Carnaval by the Sea (March 20, 2026)
An iconic Rio-style celebration at Faro Beach Club—come dressed in white and enjoy Brazilian music, dancing, and culinary delights by the shore.
See You in Rio!
ISOO Rio 2026 promises an unforgettable blend of professional growth and Brazilian hospitality, from pre-congress workshops to the main scientific sessions and vibrant cultural events. Mark your calendar, secure your membership, and get ready to shape the future of ocular oncology together. We look forward to welcoming you to Rio!
Membership & Presentation Guidelines
Non-Members Cannot Present: All presenters must be ISOO members in some category (Ordinary, Collaborating, or Member in Training).
Main Podium Presentations:
The presenting author can be a non-ordinary member, provided at least one co-author is an Ordinary Member.
Posters and case presentations are exempt from this requirement.
If an abstract has no Ordinary Member co-author, an exception request must include a short statement on the significance of the research to the society.
Why Become an Ordinary Member?
Eligibility for main podium presentations
Full voting rights and access to the ISOO Business Meeting
Discounted registration rates and an enhanced role in the global ocular oncology community
Important Deadlines
May 31, 2025: Deadline to apply for Ordinary Membership if you’d like podium rights and full member privileges at ISOO Rio. Applications received after this date may be accepted as Collaborating Members instead.
March 1, 2026: Membership applications submitted after this date are not guaranteed approval in time for the conference.
To learn more about membership categories and benefits, visit:
Become an ISOO Member
Key Dates
July 1, 2025: Registration and abstract submission open
May 31, 2025: Ordinary membership deadline for podium eligibility
March 1, 2026: Last chance to apply in time for discounted rates and presentation eligibility
Registration Rates
All rates are shown in USD. Your fee is based on your membership category and your country’s income classification per World Bank standards.
Visa & Travel Information
Visa requirements vary by country. We recommend reviewing Brazil’s visa policy as early as possible. Formal invitation letters will be available after registration opens. Additional travel and safety information will be provided closer to the event.
Stay Connected
Create an Account: If you’re new to ISOO, sign up here to receive updates on ISOO Rio 2026.
Stay Informed: Watch for email announcements and check the ISOO website for new details on sessions, social events, and more.