Which of the following is seen in chronic contact lens wearer:
**Core Concept**
Chronic contact lens wearers are at risk of developing a condition characterized by inflammation and neovascularization of the cornea, leading to vision impairment. This condition is a result of prolonged exposure to oxygen deprivation and foreign body reaction.
**Why the Correct Answer is Right**
The correct answer is Keratoconus. This condition occurs due to the thinning and conical protrusion of the cornea, which is a result of chronic hypoxia and mechanical stress caused by contact lens wear. The continuous pressure and friction from the contact lens lead to the weakening of the corneal stroma, causing it to bulge and become conical in shape.
**Why Each Wrong Option is Incorrect**
* **Option A:** Keratitis is an inflammation of the cornea, but it is not specifically associated with chronic contact lens wear.
* **Option B:** Fuchs' endothelial dystrophy is a condition affecting the endothelial layer of the cornea, leading to corneal edema. It is not directly related to contact lens wear.
* **Option D:** Pterygium is a growth on the conjunctiva or cornea, but it is not a direct consequence of chronic contact lens wear.
**Clinical Pearl / High-Yield Fact**
Chronic contact lens wearers should be advised to follow proper hygiene and replacement schedules to minimize the risk of developing keratoconus and other corneal complications.
**Correct Answer:** C. Keratoconus.