The cell type most typically seen in the Keratic precipitates of non-granulomatous uveitis is:
## **Core Concept**
Non-granulomatous uveitis, also known as nongranulomatous or acute anterior uveitis, typically presents with inflammation of the anterior segment of the eye. Keratic precipitates (KPs) are collections of inflammatory cells on the corneal endothelium, often seen in uveitis. The type of cells found in KPs can help differentiate between granulomatous and non-granulomatous uveitis.
## **Why the Correct Answer is Right**
In non-granulomatous uveitis, the keratic precipitates are primarily composed of **polymorphonuclear cells** or **small to medium-sized lymphocytes**. However, the most typical cell type seen in the keratic precipitates of non-granulomatous uveitis is **small lymphocytes**. These cells are characteristic of a non-specific, non-granulomatous inflammatory response.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, although not specified, if it implies a cell type not typically associated with non-granulomatous uveitis, it would be wrong. Typically, epithelioid cells and giant cells are more indicative of granulomatous reactions.
- **Option B:** This option might imply a different cell type, but without specification, it's hard to directly refute. However, if it suggests a cell type like epithelioid cells or giant cells, it would be incorrect for non-granulomatous uveitis.
- **Option D:** This option would be incorrect if it suggests a cell type more commonly associated with granulomatous uveitis, such as **epithelioid cells** or **Langhans giant cells**.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the presence of **small lymphocytes** as keratic precipitates is indicative of non-granulomatous uveitis, whereas **granulomatous uveitis** is characterized by the presence of **epithelioid cells** and sometimes **Langhans giant cells**. This differentiation is crucial for determining the underlying cause and guiding treatment.
## **Correct Answer:** .