Complication of vernal kerato conjunctivitis –
**Core Concept**
Vernal keratoconjunctivitis (VKC) is a bilateral, seasonal, and allergic eye condition characterized by chronic inflammation of the conjunctiva and cornea. The etiology of VKC involves an allergic response to environmental allergens, leading to the release of histamine and other chemical mediators, which cause vasodilation, increased vascular permeability, and leukocyte infiltration.
**Why the Correct Answer is Right**
The correct answer is associated with the chronic inflammation and scarring that can occur in VKC. This scarring can lead to complications such as **corneal ulcers** and **perforation**, particularly in advanced cases. The chronic inflammation also results in the formation of **Horner-Trantas dots**, which are collections of eosinophils and other inflammatory cells within the conjunctiva.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is a less common complication of VKC. While **cataract formation** can occur in advanced cases, it is not as directly related to the chronic inflammation and scarring associated with VKC.
* **Option B:** This option is incorrect because **dry eye syndrome** is more commonly associated with Sjögren's syndrome and other autoimmune conditions. While dry eye can occur in VKC, it is not a primary complication of the condition.
* **Option C:** This option is incorrect because **optic neuritis** is a complication more commonly associated with demyelinating diseases such as multiple sclerosis. While optic neuritis can occur in VKC, it is not a direct complication of the condition.
**Clinical Pearl / High-Yield Fact**
VKC is often associated with a history of **atopic diseases**, such as asthma and eczema, and patients with VKC may also have a history of allergic rhinitis. The condition is more common in males and typically affects children and young adults.
**Correct Answer:** C.