Six-months Versus Nine-months ATT for Ocular TB

Inclusion Criteria: * Objective evidence of active intraocular inflammation compatible with TPU e.g. active retinal vasculitis (with FA leakage) or choroidal lesions * Positive results of tuberculin skin test (TST \>=10 mm induration after 48 hours with 5TU) and/or interferon gamma release assay (Quantiferon TB Gold or T-SPOT) * May have evidence of healed pulmonary or other TB (but not requiring ATT for that disease) * Age more than 18 years, not pregnant Exclusion Criteria: * Ophthalmic findings or ancillary test results consistent with non-TB diagnosis * Objective findings showing only non-active disease eg. occluded retinal vessels only, with no FA leakage from non-occluded vessels, or atrophic/scarred choroidal lesions * Optic nerve involvement * Past history of uveitis * Previous ATT for ocular or other disease * Concurrent active pulmonary or other TB disease requiring ATT for that disease. * HIV infection and other immunocompromised patients * Treated with systemic or local corticosteroids within 3 months prior to entry * Received anti-VEGF injections within 3 months prior to entry * Age \<18 years * Pregnancy * Liver disease * Likelihood of poor compliance/ refusal to participate in study