Question

Red keratic precipitates are seen in?

• A. Granulomatous uveitis
• B. Hemorrhagic uveitis
• C. Old healed uveitis
• D. Acute anterior uveitis

Hint:

Red colour means RBCs in the precipitate, so think of bleeding-associated uveitis.

Answer 1

The Correct Option is B

Step 1: Keratic precipitates (KPs) are cellular and proteinaceous deposits on the back of the cornea (corneal endothelium) in uveitis. Their colour and size give clues to the type of underlying inflammation.

Step 2: Red KPs are composed of red blood cells together with inflammatory cells. The red colour reflects the RBC content, so they are seen in hemorrhagic uveitis.

Step 3: Other types help exclude the distractors. Large greasy mutton-fat KPs (epithelioid cells and macrophages) indicate granulomatous uveitis. Small whitish granular KPs of lymphocytes indicate non-granulomatous uveitis. Old KPs in healed uveitis become pigmented, faded and irregular with crenated margins.

Step 4: Since the red colour comes from RBCs, the answer is hemorrhagic uveitis.