stage III intraocular melanoma of the iris Stage III is divided into stages IIIA and IIIB. In stage IIIA, the tumor has spread through the sclera to the outside of the eyeball. The part of the tumor outside the eyeball is not more than 5 millimeters thick. In stage IIIB, the tumor has spread through the sclera to the outside of the eyeball. The part of the tumor outside the eyeball is more than 5 millimeters thick. |