Iris melanoma based on AJCC eighth edition classification
| T category | T criteria | (n) |
| T1 T1a T1b T1c | Tumour limited to the iris Tumour limited to the iris, not more than three clock hours in size Tumour limited to the iris, more than three clock hours in size Tumour limited to the iris with secondary glaucoma | 3 3 2 |
| T2 T2a T2b T2c | Tumour confluent with or extending into the ciliary body, choroid, or both Tumour confluent with or extending into the ciliary body, without secondary glaucoma Tumour confluent with or extending into the ciliary body and choroid, without secondary glaucoma Tumour confluent with or extending into the ciliary body, choroid, or both with secondary glaucoma | 2 1 1 |
| T3 | Tumour confluent with or extending into the ciliary body, choroid, or both, with scleral extension | |
| T4 T4a T4b | Tumour wit extrascleral extension Tumour with extrascleral extension ≤5 mm in largest diameter Tumour with extrascleral extension >5 mm in largest diameter | 1 0 |
| Total | 13 | |
| ||
The corresponding number of patients (n) of our series is documented in the right column.
AJCC, American Joint Committee of Cancer.