|
| Group A: very low risk |
| Small discrete tumors not threatening vision |
| (i) All tumors are 3 mm or smaller, confined to the retina |
| (ii) Located at least 3 mm from the foveola and 1.5 mm from the optic nerve |
| (iii) No vitreous or subretinal seeding |
|
| Group B: low risk |
| No vitreous or subretinal seeding |
| (i) Tumors of any size or location not in group A |
| (ii) No vitreous or subretinal seeding |
| (iii) Subretinal fluid no more than 5 mm from tumor base |
|
| Group C: moderate risk |
| Focal vitreous or subretinal seeding and discrete retinal tumors of any size and location |
| (i) Local, fine, and limited seeding |
| (ii) Discrete intraretinal tumors of any size and location |
| (iii) Up to one quadrant of subretinal fluid |
|
| Group D: high risk |
| Diffuse vitreous or subretinal seeding |
| (i) Diffuse intraocular disseminated disease |
| (ii) Extensive or “greasy” vitreous seeding |
| (iii) Subretinal seeding may be plaque-like |
| (iv) More than one quadrant retinal detachment |
|
| Group E: very high risk |
| Very high risk with one or more of the following: |
| (i) Irreversible neovascular glaucoma |
| (ii) Massive intraocular hemorrhage |
| (iii) Aseptic orbital cellulitis |
| (iv) Tumor anterior to anterior vitreous face |
| (v) Tumor touching the lens |
| (vi) Diffuse infiltrating Rb |
| (vii) Phthisis or prephthisis |
|
