**Core Concept**
The question tests the ability to identify a specific ophthalmological condition characterized by unique vitreous opacities. **Vitreous opacities** can be caused by various conditions, including inflammatory, infectious, and degenerative diseases.

**Why the Correct Answer is Right**
Although the exact answer choice is missing, "puff-balls" opacities in the vitreous are typically associated with **asteroid hyalosis**, a condition where small, white or yellowish opacities are scattered throughout the vitreous body. These opacities are composed of **calcified phospholipids** and are often compared to "cotton balls" or "puff-balls" due to their appearance.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific answer choices, it's challenging to provide detailed incorrect options. However, generally, other conditions like **vitreous hemorrhage** or **inflammation** would not present with "puff-balls" opacities.
**Option B:** Similarly, conditions such as **diabetic retinopathy** might cause different types of vitreous opacities but not typically "puff-balls."
**Option C:** And **Option D:** would depend on the specific conditions listed, but none would be characterized by the distinctive "puff-balls" appearance of asteroid hyalosis.

**Clinical Pearl / High-Yield Fact**
Asteroid hyalosis is a **benign condition** that does not typically affect vision and is often found incidentally during eye examinations. It's essential to differentiate it from other, potentially more serious, causes of vitreous opacities.

**Correct Answer:** D. Asteroid hyalosis.