## **Core Concept**
Glaukomflecken refers to a specific type of anterior subcapsular or capsular opacity of the lens associated with acute angle-closure glaucoma. This condition arises due to the sudden increase in intraocular pressure.

## **Why the Correct Answer is Right**
The correct answer, **C. Anterior subcapsular/capsular lens opacity**, is right because Glaukomflecken are characterized by their specific location and association with acute glaucoma. These opacities are a result of the ischemia and damage to the lens epithelial cells caused by the acute increase in intraocular pressure.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately describe Glaukomflecken.
- **Option B:** This option is incorrect as it does not relate to the definition or characteristics of Glaukomflecken.
- **Option D:** This option is incorrect because it also does not accurately describe Glaukomflecken.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that Glaukomflecken are a sign of acute angle-closure glaucoma and can lead to permanent vision loss if not promptly treated. Recognizing these opacities can be crucial for diagnosing acute glaucoma.

## **Correct Answer:** . C. Anterior subcapsular/capsular lens opacity