Glaucomflecken is –
**Core Concept**
Glaucomflecken refer to a type of corneal edema that occurs due to acute angle-closure glaucoma. This condition is characterized by corneal edema, which is a result of increased intraocular pressure (IOP) causing fluid accumulation in the corneal stroma.
**Why the Correct Answer is Right**
Glaucomflecken are a result of rapid increase in IOP, leading to corneal edema due to the breakdown of the blood-aqueous barrier. This breakdown allows fluid to accumulate in the corneal stroma, causing corneal edema. The corneal edema is due to the increased pressure causing the corneal endothelial cells to become compressed and lose their function, leading to fluid accumulation.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because glaucomflecken are not caused by a decrease in intraocular pressure. In fact, glaucomflecken are caused by a rapid increase in IOP.
**Option B:** This option is incorrect because corneal ulcers are a separate entity and are not directly related to glaucomflecken. Corneal ulcers are typically caused by infection or trauma.
**Option C:** This option is incorrect because posterior capsular opacification (PCO) is a separate condition that occurs after cataract surgery. PCO is characterized by the accumulation of lens epithelial cells on the posterior capsule, leading to visual disturbances.
**Clinical Pearl / High-Yield Fact**
Glaucomflecken are a sign of acute angle-closure glaucoma and require immediate attention to prevent permanent vision loss. A rapid decrease in intraocular pressure is necessary to prevent further corneal edema and preserve vision.
**Correct Answer: D. Glaucomflecken refer to a type of corneal edema that occurs due to acute angle-closure glaucoma.**