## **Core Concept**
Krukenberg spindles are a type of deposit found in the eye, specifically associated with certain types of glaucoma and pigment dispersion syndrome. They are composed of pigment and are typically seen on the anterior surface of the lens or on the posterior surface of the cornea.

## **Why the Correct Answer is Right**
Krukenberg spindles are characteristic of pigment dispersion syndrome and pigmentary glaucoma. In these conditions, the iris pigment epithelium releases pigment, which then deposits on various structures within the eye, including the anterior lens surface (forming Krukenberg spindles) and the trabecular meshwork. This pigment dispersion can lead to increased intraocular pressure and glaucoma. The correct answer relates to the association of Krukenberg spindles with pigmentary dispersion.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately relate to the conditions associated with Krukenberg spindles.
- **Option B:** This option is incorrect as it does not correctly identify the location or association of Krukenberg spindles.
- **Option C:** Although not directly provided, any option not directly related to pigment dispersion syndrome or the characteristic findings in pigmentary glaucoma would be incorrect.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that Krukenberg spindles are a diagnostic feature of pigment dispersion syndrome and pigmentary glaucoma. Their presence can help differentiate these conditions from other forms of glaucoma. Clinicians should consider pigmentary glaucoma in patients with Krukenberg spindles and signs of pigment dispersion.

## **Correct Answer:** D. Glaucoma.