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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Can J Ophthalmol. 2017 Jul 22;52(6):592–598. doi: 10.1016/j.jcjo.2017.05.012

Table 1.

T Stage classification summary (AJCC 6th edition) 13

Primary Tumor “T Stage” Extent of Tumor
T1 Tumor confined to retina without vitreous seeding or significant retinal detachment
T2 Tumor with spread to vitreous or subretinal space
T3 Tumor invasion of optic nerve or optic coat
T4 Extraocular tumor