| Group A
Small intraretinal tumours away from foveola and disc
·All tumours 3 mm or smaller in greatest dimension, confined to the retina and ·All tumours located further than 3 mm from the foveola and 1.5 mm from the optic disc
Group B
All remaining discrete tumours confined to the retina
·All tumours confined to the retina not in Group A
·Any tumour-associated subretinal fluid less than 3 mm from the tumour with no subretinal seeding
Group C
Discrete local disease with minimal subretinal or vitreous seeding
·Tumour(s) discrete
·Subretinal fluid, present or past, without seeding, involving up to 1/4 retina
·Local subretinal seeding, present or past, less than 3 mm (2 DD) from the tumour.
·Local fine vitreous seeding close to discrete tumour
Group D
Diffuse disease with significant vitreous or subretinal seeding
·Tumour(s) may be massive or diffuse
·Subretinal fluid, present or past, without seeding, involving up to total retinal detachment
·Diffuse subretinal seeding, present or past, may include subretinal plaques or tumour nodules
·Diffuse or massive vitreous disease may include "greasy" seeds or avascular tumour masses
Group E
Presence of any one or more of these poor prognosis features
·Tumour touching the lens
·Neovascular glaucoma
·Tumour anterior to anterior vitreous face involving ciliary body or anterior segment
·Diffuse infiltrating retinoblastoma
·Opaque media from hemorrhage
·Tumour necrosis with aseptic orbital cellulites
·Phthisis bulbi |
