Recent Changes in Tuberculosis Guidelines: What’s New for Ocular Tuberculosis

Ocular TB can cause moderate to severe visual impairment in up to 40% of affected eyes. Delay in diagnosis and treatment can result in chronic inflammation and loss of vision. The pathogenesis of ocular tuberculosis is still not clear, whether it result from a direct mycobacterial infection or a hypersensitivity response to mycobacterium tuberculosis. The choroidal nodules likely link from direct hematogenous infection while the vasculitis and choroiditis are probably the result of immune hypersensitivity. Prevalence of tuberculosis as an etiology of uveitis range from 5- 10% in endemic areas.