## **Core Concept**
The question tests knowledge on the potential side effects of intravitreally administered drugs, specifically focusing on macular toxicity. Intravitreal injections are a common method for delivering drugs directly into the eye, particularly for treating conditions like age-related macular degeneration (AMD) and diabetic macular edema. Macular toxicity refers to harmful effects on the macula, the part of the retina responsible for central vision.

## **Why the Correct Answer is Right**
The correct answer, , is known to cause macular toxicity when given intravitreally. This is because can induce retinal pigment epithelial (RPE) cells and photoreceptor apoptosis, leading to visual disturbances. Specifically, has been associated with the development of macular edema and retinal thinning.

## **Why Each Wrong Option is Incorrect**
* **Option A:** is not commonly associated with macular toxicity when administered intravitreally. Its side effects profile does not prominently feature macular toxicity.
* **Option B:** is used for various ocular conditions but is not primarily known for causing macular toxicity through intravitreal administration.
* **Option D:** does not have a well-documented association with macular toxicity following intravitreal injection.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that drugs administered intravitreally must be carefully selected and monitored due to the risk of ocular side effects, including macular toxicity. is an example of a drug that requires careful consideration of its risk-benefit profile, especially in patients with pre-existing macular conditions.

## **Correct Answer:** .