**Question:** Mitomycin C drops are used in: September 2012

**Core Concept:** Mitomycin C is a chemotherapeutic agent that is used in ophthalmology for the treatment of various ocular surface diseases. It is a DNA cross-linking agent that inhibits DNA synthesis and cell proliferation, thereby reducing tumor growth.

**Why the Correct Answer is Right:** Mitomycin C is used as a topical medication to treat ocular surface diseases due to its ability to reduce tumor growth, specifically targeting the ocular surface cells. In the context of September 2012, Mitomycin C drops are used in the management of pterygium, a benign growth on the conjunctiva that can lead to visual disturbances and corneal damage if left untreated.

**Why Each Wrong Option is Incorrect:**

A. **Option A:** Keratitis: Although Mitomycin C can be used in the management of various ocular surface diseases, it is not specifically used for treating keratitis.

B. **Option B:** Corneal ulcer: Mitomycin C is used for ocular surface diseases, not specifically for managing corneal ulcers.

C. **Option C:** Corneal graft: Mitomycin C is a topical medication used to treat ocular surface diseases, not for managing corneal grafts.

D. **Option D:** Uveitis: Mitomycin C is used for ocular surface diseases and not specifically for managing uveitis.

**Clinical Pearl:** Mitomycin C is a valuable tool in the ophthalmologist's armamentarium to manage various ocular surface diseases, particularly pterygium, due to its ability to inhibit DNA synthesis and cell proliferation. It is essential for medical students, residents, and practicing ophthalmologists to understand the appropriate usage and contraindications of Mitomycin C to ensure safe and effective patient care.

**Correct Answer:** Mitomycin C (Option D)

Mitomycin C is used for managing ocular surface diseases, particularly pterygium, which is a benign growth on the conjunctiva that can lead to visual disturbances and corneal damage if left untreated. By inhibiting DNA synthesis and cell proliferation, Mitomycin C helps to control the growth of pterygium and preserve the ocular surface.