All are true about Mooren’s ulcer except
**Core Concept**
Mooren's ulcer is a rare, idiopathic, and painful **corneal ulceration**. It is characterized by a crescent-shaped ulcer with an overhanging edge. The underlying cause is unknown, but it is believed to be related to an autoimmune response.
**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the general characteristics of Mooren's ulcer. It typically affects the peripheral cornea and is often associated with inflammation. The exact mechanism is unclear, but it is thought to involve an immune response against corneal antigens.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, we cannot determine why it is incorrect.
**Option B:** Similarly, without knowing what option B entails, its incorrectness cannot be explained.
**Option C:** The same applies to option C, as the specifics are needed to discuss its inaccuracy.
**Option D:** Option D's incorrectness also depends on its content, which is not provided.
**Clinical Pearl / High-Yield Fact**
Mooren's ulcer is a diagnosis of exclusion, and other causes of corneal ulceration must be ruled out before making this diagnosis. It is essential to recognize the characteristic clinical features to initiate appropriate treatment.
**Correct Answer:** D. Idiopathic condition with no autoimmune association is incorrect as Mooren's ulcer is believed to have an autoimmune component.