## **Core Concept**
Phlyctenular conjunctivitis is an allergic or hypersensitivity reaction of the conjunctiva, typically seen in children and young adults. It is often associated with staphylococcal blepharitis, tuberculosis, or other chronic infections. The condition involves the formation of small nodules or "phlyctenules" on the conjunctiva.

## **Why the Correct Answer is Right**
The correct treatment involves addressing the underlying cause, which is usually an allergic or immune-mediated response. **Topical corticosteroids** are effective in reducing inflammation and suppressing the immune response. They are considered a mainstay in the treatment of phlyctenular conjunctivitis, especially when the condition is severe or persistent.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is blank and cannot be evaluated.
- **Option B:** This option is also blank and does not provide a viable treatment alternative.
- **Option D:** Similarly, this option is blank and lacks a treatment choice.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that phlyctenular conjunctivitis often resolves with treatment of the underlying condition, such as staphylococcal blepharitis, and use of **topical corticosteroids**. It's also important to note that in cases associated with tuberculosis, anti-tubercular therapy may be required.

## **Correct Answer:** C. Topical corticosteroids.