**Core Concept**
Kayser-Fleischer rings (KF rings) are a clinical sign characterized by a brownish-black discoloration of the cornea, specifically at the periphery. This occurs due to the deposition of copper in the Descemet's membrane of the cornea.

**Why the Correct Answer is Right**
The deposition of copper in the Descemet's membrane is a result of the accumulation of copper in the body, typically due to Wilson's disease, a genetic disorder that leads to excessive accumulation of copper in the liver, brain, and other organs. The excess copper is then deposited in the cornea, leading to the formation of KF rings. The accumulation of copper is facilitated by the enzyme ATP7B, which plays a crucial role in regulating the transport of copper in the liver.

**Why Each Wrong Option is Incorrect**
* **Option A:** KF rings are not typically associated with hemochromatosis, a genetic disorder that leads to excessive accumulation of iron in the body.
* **Option B:** While KF rings can be seen in other conditions that lead to copper accumulation, such as Indian childhood cirrhosis, they are not a hallmark feature of this condition.
* **Option D:** KF rings are not typically associated with Menkes disease, a genetic disorder that leads to copper deficiency in the body.

**Clinical Pearl / High-Yield Fact**
KF rings are a useful diagnostic clue for Wilson's disease, a condition that requires prompt treatment to prevent long-term complications. A mnemonic to remember the key features of Wilson's disease is "CURLS": Copper accumulation, Liver disease, Neuropsychiatric symptoms, Kayser-Fleischer rings, and Seizures.

**Correct Answer: B. Wilson's disease.**