Chalcosis is seen with –

**Core Concept**
Chalcosis is a type of ocular toxicity caused by the deposition of copper in the eye, often as a result of wearing copper-containing intraocular foreign bodies. This condition can lead to various ocular manifestations, including corneal edema, cataract formation, and retinal damage.

**Why the Correct Answer is Right**
Chalcosis occurs due to the release of copper ions from the intraocular foreign body, which then accumulate in the ocular tissues. The copper ions can bind to the sulfhydryl groups of proteins, leading to the formation of insoluble copper sulfides and subsequent tissue damage. This process is thought to occur through the activation of various cellular pathways, including oxidative stress and inflammation.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because chalcosis is not typically associated with the deposition of other metals, such as silver or lead. While these metals can also cause ocular toxicity, the specific clinical and pathological features of chalcosis are characteristic of copper toxicity.
**Option B:** Incorrect because chalcosis is not a type of ocular degeneration caused by genetic mutations or age-related changes. While certain genetic disorders can lead to ocular degeneration, the pathogenesis of chalcosis is distinct and related to copper exposure.
**Option C:** Incorrect because chalcosis is not a type of ocular infection or inflammation caused by microbial or fungal organisms. While certain ocular infections can lead to tissue damage and inflammation, the underlying mechanism of chalcosis is related to copper toxicity rather than infection.

**Clinical Pearl / High-Yield Fact**
Intraocular foreign bodies containing copper can lead to chalcosis, a condition characterized by the deposition of copper in the eye and subsequent tissue damage. Prompt recognition and removal of the foreign body are essential to prevent further ocular damage.

**Correct Answer:** D.