**Core Concept**
Maffucci syndrome is a rare genetic disorder characterized by the presence of multiple benign and malignant tumors, including osteochondromas, and other lesions. The syndrome is often associated with abnormalities in the skeletal and musculoskeletal system. In Maffucci syndrome, lens dislocation is a common feature due to the involvement of the ocular structures.

**Why the Correct Answer is Right**
Lens dislocation in Maffucci syndrome is primarily caused by the development of osteochondromas in the orbit, which can lead to the displacement of the lens. The osteochondromas can grow and exert pressure on the surrounding tissues, including the zonular fibers that support the lens. This can result in the lens becoming dislocated from its normal position. The involvement of the ocular structures in Maffucci syndrome highlights the systemic nature of the disorder.

**Why Each Wrong Option is Incorrect**
- **Option A:** This is incorrect because lens dislocation in Maffucci syndrome is not typically associated with neurofibromatosis type 1, which is a different genetic disorder that affects the nervous system and can cause various ocular abnormalities.
- **Option B:** This is incorrect because lens dislocation in Maffucci syndrome is not primarily caused by the development of cataracts, which are a common age-related condition that affects the lens clarity.
- **Option C:** This is incorrect because lens dislocation in Maffucci syndrome is not typically associated with Marfan syndrome, which is a separate genetic disorder that affects the connective tissue and can cause various ocular abnormalities, including lens dislocation.

**Clinical Pearl / High-Yield Fact**
Maffucci syndrome is a rare genetic disorder that highlights the importance of considering systemic involvement in patients with ocular abnormalities. A high index of suspicion is necessary to diagnose this condition, and a thorough medical and family history should be taken in patients with unexplained ocular findings.

**Correct Answer:** C. Marfan syndrome