**Core Concept**
Ozurdex is a formulation of dexamethasone, a corticosteroid, used in the treatment of various inflammatory conditions. It is administered via intravitreal injection to reduce inflammation and edema in the eye.

**Why the Correct Answer is Right**
Ozurdex is a sustained-release formulation of dexamethasone, which allows for prolonged release of the steroid into the vitreous humor. This formulation is designed to provide therapeutic levels of dexamethasone for an extended period, reducing the need for frequent injections. The intravitreal injection of Ozurdex targets the posterior segment of the eye, where inflammation and edema are most pronounced.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect, as Ozurdex is not a formulation of triamcinolone.
**Option B:** Incorrect, as Ozurdex is not administered via subcutaneous injection.
**Option C:** Incorrect, as Ozurdex is not a formulation of prednisolone.

**Clinical Pearl / High-Yield Fact**
Ozurdex is a corticosteroid that is specifically designed for intravitreal use, making it a valuable treatment option for patients with macular edema and other posterior segment inflammatory conditions.

**Correct Answer:** C. Dexamethasone implant.