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

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 cells.

[1] Mutton fat KPs are due to granulomatous iridocyclitis.

[2] Another variant called red KPs may be seen in hemorrhagic uveitis.