International Intraocular Retinoblastoma Classification – Staging System for Retinoblastoma (2005) Linn Murphree

Description

The IIRC is the standardized staging system used globally for retinoblastoma contained within the eye(s), replacing the Reese-Ellsworth Classification. Developed by Dr. Murphree, the system ranges from Group A (lowest risk, predicting better outcomes) to Group E (highest risk/poor prognosis features), detailing criteria based on tumor size, location, and the presence and extent of vitreous or subretinal seeding.