**Core Concept**
Keratic precipitates (KPs) are deposits of protein and inflammatory cells on the corneal endothelium, typically associated with intraocular inflammation. They are a hallmark of uveitis, an inflammatory condition affecting the uvea, the middle layer of the eye.

**Why the Correct Answer is Right**
In uveitis, KPs form as a result of the migration of inflammatory cells, including lymphocytes and macrophages, from the anterior chamber to the corneal endothelium. This process is mediated by the production of various cytokines and chemokines, which facilitate the recruitment of immune cells to the affected area. The corneal endothelium, being a highly permeable layer, allows these inflammatory cells to accumulate and deposit protein, resulting in the formation of KPs. In uveitis, KPs are often seen in association with other signs of inflammation, such as conjunctival injection and aqueous flare.

**Why Each Wrong Option is Incorrect**
**Option A:** Corneal ulcers, on the other hand, are typically characterized by the presence of a distinct ulcerative lesion on the corneal surface, accompanied by signs of corneal infiltration and necrosis. While corneal ulcers can be associated with secondary uveitis, they are not a primary cause of KP formation.
**Option C:** Nuclear cataracts involve the central, posterior portion of the lens and are not typically associated with KP formation. Cataracts are characterized by the accumulation of protein and water within the lens, leading to opacity and vision loss.
**Option D:** Keratoconus is a progressive, bilateral corneal disorder characterized by thinning and conical protrusion of the cornea. While keratoconus can be associated with corneal scarring and changes in corneal topography, it is not typically associated with KP formation.

**Clinical Pearl / High-Yield Fact**
A key characteristic of uveitis is the presence of KPs, which can be seen in various forms, including fine, stippled KPs in anterior uveitis and larger, nodular KPs in intermediate or posterior uveitis. Recognizing the presence and distribution of KPs is critical in diagnosing and managing uveitis.

**✓ Correct Answer: B. Uveitis**