**Core Concept**
Posterior staphyloma refers to a bulging out of the posterior segment of the eye, specifically the sclera, which is a part of the eye's outer layer. This condition is often associated with a weakening of the scleral tissue, leading to a protrusion of the retina.

**Why the Correct Answer is Right**
Posterior staphyloma is typically seen in conditions that cause chronic intraocular pressure (IOP) elevation, such as glaucoma. The increased IOP can lead to thinning and stretching of the sclera, eventually resulting in a staphyloma. The pathophysiology behind this involves the weakening of the scleral tissue due to prolonged mechanical stress from the elevated IOP.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as posterior staphyloma is not typically associated with conditions that cause anterior segment pathology.

**Option B:** This option is incorrect as posterior staphyloma is not a characteristic feature of retinal detachment.

**Option C:** This option is incorrect as posterior staphyloma is not a common finding in patients with uveitis.

**Clinical Pearl / High-Yield Fact**
It's essential to recognize that posterior staphyloma can be a sign of underlying glaucoma, and prompt diagnosis and treatment of the underlying condition are crucial to prevent further progression of the staphyloma.

**Correct Answer:** C. Primary congenital glaucoma