Granular keratic precipitates are made of ?
Correct Answer: Lymphocytes
Description: Ans. is 'c' i.e., Lymphocytes Keratic precipitates (KPs) KPs are proteinaceous cellular deposits occurring at the back of cornea (corneal endothelial deposits). Keratic precipitates are formed by the aggregation of polymorphonuclear cells, lymphocytes, and epitheloid cells. In the setting of uveitis, the bimicrosopic appearance of KP may yeild impoant diagnostic clues for the identification of the underlying inflammatory disorder :? Mutton fat KP :- Large, yellowish KPs, are characteristic ofgranulomatous uveitis. These are composed of epitheloid cells and macrophages. They are large, thick fluffy, lardaceous KPs, having a greasy or waxy appearance. Small or medium KPs (granular KPs):- These are composed of lymphocytes and are characteristic of non- granulomatous uveitis. These are small, round and whitish precipitates Red KPs :- Composed of RBCs and inflammatory cells. These are seen in hemorrhagic uveitis. Old KPs In healed uveitis. The above described KPs shrink, fade, become pigmented and irregular in shape with crenated margins.
Category:
Ophthalmology
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