**Core Concept**
Fuchs' heterochromic iridocyclitis is a rare, chronic form of anterior uveitis characterized by heterochromia of the iris, particularly in the inferior quadrant, due to chronic inflammation and destruction of the iris pigment epithelium. This condition often presents bilaterally and is associated with a low-grade inflammatory response.

**Why the Correct Answer is Right**
Fuchs' heterochromic iridocyclitis is a form of chronic uveitis that results from the destruction of the iris pigment epithelium, leading to heterochromia. The condition is often bilateral and associated with a low-grade inflammatory response, which may include mild to moderate anterior chamber inflammation, cataract formation, and secondary glaucoma. The heterochromia is thought to result from the destruction of the iris pigment epithelium, which leads to a gradual loss of pigment in the affected eye.

**Why Each Wrong Option is Incorrect**
* **Option A:** Fuchs' heterochromic iridocyclitis is not typically characterized by a high-grade inflammatory response, which is more often seen in acute forms of uveitis.
* **Option B:** Fuchs' heterochromic iridocyclitis is not primarily associated with the presence of systemic autoimmune disorders, although it may coexist with other autoimmune conditions.
* **Option C:** Fuchs' heterochromic iridocyclitis is a chronic condition, rather than an acute or self-limiting form of uveitis.

**Clinical Pearl / High-Yield Fact**
Fuchs' heterochromic iridocyclitis is often referred to as the "lazy eye" of uveitis, due to its chronic and often asymptomatic nature.

**Correct Answer: B. Fuchs' heterochromic iridocyclitis is a form of chronic uveitis that often presents bilaterally and is associated with heterochromia of the iris.**