Anterior uveitis Intermediate uveitis Panuveitis Retinal Vasculitis Choroiditis First Episode Recurrent Episode Active Inactive Serpiginoid Multifocal Tuberculoma (Choroidal granuloma/nodule)
Following the principles of the Standardization of Uveitis Nomenclature (SUN) classification (reference # 4):
Tubercular anterior uveitis (TAU) is defined as inflammation limited to the anterior segment, where the primary site of inflammation is the anterior chamber involving the iris and ciliary body.
Tubercular intermediate uveitis (TIU) is defined as the vitreous being the major site of inflammation.
Tubercular posterior uveitis (TPU) is defined as the lack of predominant site of inflammation with inflammation observed in the anterior chamber, vitreous, and retina and/or choroid.
Active tubercular retinal vasculitis (TRV) is described to be evidence of ocular inflammation and retinal vascular changes, including perivascular sheathing and vascular leakage or occlusion on fluorescein angiogram as evidence of retinal vascular disease. Inactive TRV is described to be retinal vascular changes without evidence of ocular inflammation.
Tubercular serpiginous like choroiditis (TB SLC) is defined as inflammation limited to the choroid, the primary site of inflammation, and is characterized by single or multiple discrete yellowish-white fuzzy choroidal lesions and slightly raised edges that show wave-like progression with an active serpiginous-like edge with central healing. Choroidal Tuberculoma (or choroidal nodule) as defined by SUN 2021 is defined as inflammation limited to the choroid, the primary site of inflammation, and is characterized by single or multiple yellowish subretinal lesions with indistinct borders and surrounding exudative fluid, along with oval or round lesion in the choroidal stroma.
Tubercular Multifocal (NonSerpiginous) Choroiditis (TB NSC) is defined as inflammation limited to the choroid, the primary site of inflammation, and is characterized by unifocal or multifocal choroiditis lesions with a phenotype similar to idiopathic multifocal choroiditis, acute posterior multifocal placoid pigment epitheliopathy (APMPPE) and other phenotypes that do not resemble TB SLC.