Keratic precipitate (KP) is an inflammatory cellular deposit seen on

corneal endothelium The corneal endothelium is a single layer of endothelial cells on the inner surface of the cornea. It faces the chamber formed between the cornea and the iris. The corneal endothelium are specialized, flattened, mitochondria-rich cells that l ...

. Acute KPs are white and round in shape whereas old KPs are faded and irregular in shape. Mutton-fat KPs are large in shape and are greasy-white in color and are formed from macrophages and

epithelioid cell According to a common point of view epithelioid cells (also called epithelioid histiocytes) are derivatives of activated macrophages resembling epithelial cells. Structure and function Structurally, epithelioid cells (when examined by light m ...

s. They are indicative of inflammatory disease. Mutton fat KPs are due to granulomatous iridocyclitis. Another variant called red KPs may be seen in hemorrhagic uveitis.

References

Disorders of sclera and cornea Inflammations {{eye-stub