**Core Concept**
Asteroid hyalosis is a rare, benign condition characterized by the presence of small, white or yellowish, refractile bodies within the vitreous humor of the eye. These bodies are composed of proteinaceous material that accumulates in the vitreous gel.

**Why the Correct Answer is Right**
The correct answer is composed of proteinaceous material, specifically fibrin and lipid. These bodies are formed due to the breakdown of the vitreous gel, leading to the accumulation of fibrin and lipid droplets. The exact mechanism is not fully understood, but it is thought to be related to the aging process and changes in the vitreous humor.

**Why Each Wrong Option is Incorrect**
* **Option A:** Not applicable, as this is a distractor.
* **Option B:** Not correct, as asteroid hyalosis bodies are not composed of calcium.
* **Option C:** Not correct, as asteroid hyalosis bodies are not composed of amyloid.

**Clinical Pearl / High-Yield Fact**
Asteroid hyalosis is often associated with aging and is more common in older adults. It is typically an incidental finding and does not cause any symptoms or vision problems.

**Correct Answer: C. Amyloid**