**Core Concept**
Lenticonus is a rare, congenital anomaly of the lens in the eye, characterized by a conical protrusion of the lens capsule. It can be associated with systemic conditions, such as Alport syndrome, or occur in isolation. The two main types of lenticonus are anterior and posterior.

**Why the Correct Answer is Right**
Anterior lenticonus is more common in females, whereas posterior lenticonus is more common in males. This distinction is clinically relevant, as posterior lenticonus is often associated with Alport syndrome, a genetic disorder affecting the type IV collagen in the basement membranes of the kidney, ear, and eye. Posterior lenticonus can also be associated with other systemic conditions, such as Fabry disease.

**Why Each Wrong Option is Incorrect**
* **Option A:** Anterior lenticonus is more common in females, making this option incorrect.
* **Option B:** There is no known association between posterior lenticonus and systemic conditions in females, making this option incorrect.
* **Option D:** This option is incomplete and does not provide a comparison, making it incorrect.

**Clinical Pearl / High-Yield Fact**
When evaluating patients with lenticonus, it is essential to consider systemic conditions, such as Alport syndrome and Fabry disease, particularly in males with posterior lenticonus.

**Correct Answer: C. Posterior lenticonus is more common in males.**