We are planning the 20th congress of the International Society of Ocular Oncology, a modern-style congress, in Leiden, The Netherlands, from June 17 to 21, 2022. We are planning for having a physical meeting in Leiden, which can also be attended on line. We will present the newest diagnostic tests and the best treatments for all types of ocular malignancies: tumors inside the eye, on the ocular surface, the eyelids, or the orbit. The newest developments will be discussed, and intriguing cases presented. The best social activities will help to introduce you, our guest, to the beauty of Leiden.