All are causes of chronic granulomatous uveitis EXCEPT:
**Core Concept**
Chronic granulomatous uveitis is a type of intraocular inflammation characterized by the presence of granulomas, which are aggregates of immune cells that attempt to wall off a perceived foreign substance or infection. This condition is often associated with systemic diseases that involve the immune system, such as sarcoidosis, tuberculosis, and syphilis.
**Why the Correct Answer is Right**
Chronic granulomatous uveitis is typically caused by infections or autoimmune diseases that trigger an immune response, leading to the formation of granulomas within the eye. The most common causes include sarcoidosis, a systemic disease characterized by the presence of non-caseating granulomas, and tuberculosis, which can spread to the eye from a distant site. Syphilis, a bacterial infection caused by Treponema pallidum, can also cause chronic granulomatous uveitis, particularly in its tertiary stage.
**Why Each Wrong Option is Incorrect**
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**Clinical Pearl / High-Yield Fact**
Chronic granulomatous uveitis often presents with symptoms such as pain, redness, and vision loss, and can be associated with systemic symptoms such as fever and weight loss. A thorough medical history and laboratory tests are essential to diagnose the underlying cause of the uveitis.
**Correct Answer:** .