KPs in Eye = Keratic Precipitates
What are KPs?
Keratic Precipitates are deposits of inflammatory cells seen on the corneal endothelium.
They are a classic sign of anterior uveitis (iritis/iridocyclitis).
They occur because inflammatory cells from aqueous humour settle on the corneal endothelium.
Types of KPs
1. Fine KPs
Small, dust-like, faint.
Seen in non-granulomatous uveitis (e.g., HLA-B27 related uveitis).
2. Mutton-fat KPs
Large, greasy, whitish-yellow.
Seen in granulomatous uveitis (e.g., Tuberculosis, Sarcoidosis, Syphilis).
3. Old/Healed KPs
Shrunken, faded, pigmented or star-shaped.
Indicate resolved or chronic uveitis.
Clinical Importance of KPs
Helps in identifying uveitis activity (acute vs. chronic).
Type of KPs indicates whether it is granulomatous or non-granulomatous uveitis.
Useful for diagnosis and prognosis in uveitis cases.
👉 In short:
KPs = Keratic Precipitates → Inflammatory cell deposits on corneal endothelium → Important sign of anterior uveitis.
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