## **Core Concept**
Topical mitomycin-C is an application of the chemotherapeutic agent mitomycin-C directly to the ocular surface. Mitomycin-C is an antibiotic and antineoplastic agent that works by inhibiting DNA synthesis, thereby preventing cell division. This property makes it useful in ophthalmology for preventing scarring.

## **Why the Correct Answer is Right**
The correct use of topical mitomycin-C in ophthalmology is primarily for its antiproliferative effects, which help in preventing or reducing scarring. One of the most common applications is in the treatment and prevention of pterygium, a condition where fibrovascular tissue grows onto the cornea from the conjunctiva. By inhibiting fibroblast proliferation, mitomycin-C reduces the recurrence rate of pterygium after surgical removal. It is also used in ocular surface disorders and after procedures like trabeculectomy to prevent scarring.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not specified, but if it relates to a use not primarily associated with antiproliferative effects on ocular surface tissues, it would be incorrect.
- **Option B:** Similarly, without specifics, if this option does not align with the established uses of mitomycin-C in ophthalmology, such as pterygium treatment or prevention of scarring post-surgery, it would be incorrect.
- **Option C:** If this option suggests a use not supported by clinical evidence or standard practice in ophthalmology regarding mitomycin-C, it would be incorrect.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that mitomycin-C is used to prevent scarring in ocular surgeries, notably in pterygium surgery. Its application requires careful consideration of concentration and duration to avoid complications like corneal ulcers or persistent epithelial defects.

## **Correct Answer:** D. Pterygium.