CHORIORETINAL INFLAMMATORY DISEASES - Infectious Causes
Ocular tuberculosis is an infection caused by Mycobacterium tuberculosis. It can manifest as a primary infection or affect the eye via the hematogenous pathway. About 1-2% occurs through systemic tuberculosis. It may be unilateral or bilateral and occurs in all age ranges.
Tuberculosis can affect any structure in the eye and typically presents as a granulomatous process with multifocal, light colored choroidal granulomas.
Clinically it manifests as uveitis with a varied clinical presentation, such as chronic iridocyclitis, focal or multifocal choroiditis, and pan-periphlebitis. There can also be exudative retinitis with venous dilatation, hemorrhages and numerous white or yellow superficial exudates. Diffuse choroiditis (the presence of white-yellowish tubers with a diameter of 1/6 to ½ the diameter of the...