Evaluation of Ocular Tuberculosis

Mycobacterium tuberculosis is a slow-growing acid-fast bacteria. It causes an airborne communicable disease. Inhalation of a droplet containing bacilli reaches alveoli and causes primary tuberculosis (TB) or gets cleared by the immune system. Alternatively, a patient may develop asymptomatic, latent TB. If the infection is not cleared by the immune system, the bacilli spread from regional lymph nodes to the lungs and give rise to pulmonary TB. Subsequent lymphatic and hematogenous dissemination result in extrapulmonary disease.