In the absence of obvious pulmonary or disseminated tuberculosis, ocular and central nervous system (CNS) tuberculosis may
represent a significant diagnostic challenge. Refinements in polymerase chain reaction techniques and neuroimaging have strengthened
the battery of tests used to diagnose CNS and ocular tuberculosis, yet in many cases, the diagnosis remains one of exclusion;
it may ultimately be determined through exacerbation by anti-inflammatory therapy with subsequent improvement by antitubercular
medication treatment. Because of emerging drug resistance, at least a two-drug regimen is required for therapeutic testing
and treatment of isolated ocular tuberculosis. If pulmonary or miliary disease coexists, a 6-month, four-drug regimen with
isoniazid, rifampin, pyrazinamide, and ethambutol is required for treatment. Tubercular meningitis is treated with the same
four-drug regimen for at least 9 to 12 months. Burden of therapeutic compliance rests on the treating physician and public
health sector. Best compliance is realized with directly observed therapy.