Any professional with active interest in the tumors of eye and adnexa can become a member of ISOO. The following are the suggested categories of professionals who may benefit from ISOO membership:

Ophthalmologists Ophthalmologists Comprehensive ophthalmologists Retina specialists Uveal specialists Ophthalmic plastic surgeons Orbital surgeons Pediatric ophthalmologists Ocular surface specialists Oncologists Radiation oncologists Medical oncologists Surgical oncologists Pediatric oncologists Hematoncologists Palliative care specialists Surgeons Head and neck surgeons Otorhinolaryngologists Neurosurgeons Pathologists General pathologists Oncopathologists Ophthalmic pathologists Basic Science Researchers Molecular biologists Cancer biologists Geneticists Other professionals Cancer pharmacotherapists Cancer pharmacologists Radiologists Radiation physicists Oncology nurses Oncology counselors