**Core Concept**
Syneresis refers to the separation or expulsion of liquid from a gel-like substance. This phenomenon is commonly observed in ophthalmology, particularly in the context of vitreous humor in the eye. The vitreous humor is a clear, gel-like substance that fills the space between the lens and the retina.

**Why the Correct Answer is Right**
Syneresis occurs due to the breakdown of the hyaluronic acid network in the vitreous humor, which leads to the collapse of the gel-like structure and the separation of the liquid from the solid components. This process can be triggered by various factors, including age-related changes, trauma, or disease. The separation of the liquid from the solid components can cause vision problems, including floaters and vision distortion.

**Why Each Wrong Option is Incorrect**
**Option A:** Syneresis is not typically associated with the process of gelation, where a liquid transforms into a solid gel-like substance. Gelation is a distinct process that involves the formation of a network of molecules, whereas syneresis involves the separation of liquid from a pre-existing gel.

**Option B:** While syneresis can occur in various gel-like substances, it is not directly related to the process of vitrification, which involves the transformation of a liquid into a glassy or amorphous solid. Vitrification is a distinct process that involves the rapid cooling of a substance to prevent crystallization.

**Option C:** Syneresis is not typically associated with the process of gelatinization, where a soluble starch or protein is converted into a gel-like substance. Gelatinization is a distinct process that involves the breakdown of starch or protein molecules to form a gel-like substance.

**Clinical Pearl / High-Yield Fact**
Syneresis is an important clinical phenomenon that can cause vision problems, including floaters and vision distortion. It is essential to recognize the signs and symptoms of syneresis, particularly in patients with a history of trauma or age-related changes.

**Correct Answer:** C.